0  690  698  704  708  714  716  720  726  728  734  740  744  746  750  756  758  764  768  770  774  776  780  782  784  785  786  788  789  790  792  794  798  800  804  806  810  816  818  824  828  830  834  840  846  848  854  858  860  866  870  876  884  3002 

成都市2008~2009學年度上期期末調研考試學科網(Zxxk.Com)

高二英語學科網(Zxxk.Com)

(考試時間120分鐘,滿分150分)學科網(Zxxk.Com)

注意事項:學科網(Zxxk.Com)

1.答A卷前,考生務必將自己的姓名、考號、考試科目用鉛筆填寫在機讀卡上,并用鋼筆或圓珠筆將密封線內的項目填寫清楚。學科網(Zxxk.Com)

2.解答A卷的選擇題時,當每小題選出答案后,用鉛筆把答題卡上對應題目的答案標號涂黑,如需改動,用橡皮擦干凈后,再選涂其它答案。A卷選擇題答案不能寫在試卷紙上。學科網(Zxxk.Com)

3.B卷的非選擇題答案用鋼筆或圓珠筆寫在試卷紙上。學科網(Zxxk.Com)

A卷(115分)學科網(Zxxk.Com)

第一部分聽力(共兩節,滿分30分)學科網(Zxxk.Com)

做題時,先將答案勾畫在試卷上。錄音內容結束后,你將有兩分鐘的時間將試卷上的答案轉涂到機讀卡。學科網(Zxxk.Com)

第一節(共5小題;每小題1.5分,滿分7.5分)學科網(Zxxk.Com)

聽下面5段對話,每段對話后有一個小題,從題中所給的A、B、C三個選項中選出最佳選項,并標在試卷的相應位置。聽完每段對話后,你都有10秒鐘的時間來回答有關小題和閱讀下一小題。每段對話僅讀一遍。學科網(Zxxk.Com)

1.           what is the man trying to buy?學科網(Zxxk.Com)

A.A suitcase.            B.A wheelchair.              C.A flight magazine.學科網(Zxxk.Com)

2.Where are the speakers going to eat?學科網(Zxxk.Com)

A.At home.學科網(Zxxk.Com)

B.At a common restaurant.學科網(Zxxk.Com)

C.At a vegetarian restaurant.學科網(Zxxk.Com)

3.How many things is the man doing at the same time?學科網(Zxxk.Com)

A.Two.                    B.Three.                  C.Four.學科網(Zxxk.Com)

4.What’s the relationship of the two speakers?學科網(Zxxk.Com)

A.Relatives.             B.A couple.             C.Friends.學科網(Zxxk.Com)

5.What was the woman doing before the man arrived?學科網(Zxxk.Com)

A.Waiting for the man for dinner.學科網(Zxxk.Com)

B.Being caught in a traffic jam.學科網(Zxxk.Com)

C.Apologizing for being late.學科網(Zxxk.Com)

第二節(共15小題;每小題1.5分,滿分22.5分)學科網(Zxxk.Com)

聽下面5段對話。每段對話后有幾個小題,從題中所給的A、B、C三個選項中選出最佳選項,并標在試卷的相應位置。聽每段對話前,你將有時間閱讀各個小題,每小題5秒鐘。聽完后,每小題將給出5秒鐘的作答時間。每段對話讀兩遍。學科網(Zxxk.Com)

聽下面一段對話,回答第6至8題。學科網(Zxxk.Com)

6.How did Gabby feel when she heard the news?學科網(Zxxk.Com)

A.She was amused.          B.She was concerned.      C.She was amazed.學科網(Zxxk.Com)

7.Why did Gabby thank her father?學科網(Zxxk.Com)

A.He bought her many cameras.學科網(Zxxk.Com)

B.He traveled with her on vacations.學科網(Zxxk.Com)

C.He trained her how to take good photos.學科網(Zxxk.Com)

8.What is Gabby going to study in university?學科網(Zxxk.Com)

A.Photography.               B.Chemistry.                  C.Art.學科網(Zxxk.Com)

聽下面一段對話,回答第9至11題。學科網(Zxxk.Com)

9.Where are the speakers planning to go first next morning?學科網(Zxxk.Com)

A.The art museum.          B.The Indian restaurant.   C.The zoo.學科網(Zxxk.Com)

10.Why does the man want to visit the zoo in the afternoon?學科網(Zxxk.Com)

A.The zoo is only a few blocks from the museum.學科網(Zxxk.Com)

B.There are some animals that can be found nowhere else.學科網(Zxxk.Com)

C.The man has just enough cash to pay for the zoo tickets.學科網(Zxxk.Com)

11.Why does the woman want to go shopping instead?學科網(Zxxk.Com)

A.She wants to buy some souvenirs.學科網(Zxxk.Com)

B.She knows many goods are on sale.學科網(Zxxk.Com)

C.She can’t think of anything else to do.學科網(Zxxk.Com)

聽下面一段對話,回答第12至13題。學科網(Zxxk.Com)

12.What wasn’t Jim like in his workmates’ eyes?學科網(Zxxk.Com)

A.He was generous and kind.學科網(Zxxk.Com)

B.He was happy and honest.學科網(Zxxk.Com)

C.He was talkative and slow.學科網(Zxxk.Com)

13.Why was Jim Gray fired?學科網(Zxxk.Com)

A.He faced many difficulties.學科網(Zxxk.Com)

B.He talked too much and was not serious.學科網(Zxxk.Com)

C.He spent too much money on good meals and gifts.學科網(Zxxk.Com)

聽下面一段對話,回答第14至17題。學科網(Zxxk.Com)

14.Where are the two speakers?學科網(Zxxk.Com)

A.In the teacher’s office.         B.In a bookstore.             C.In a library.學科網(Zxxk.Com)

15.Which topics for poetry does the woman like?學科網(Zxxk.Com)

A.Topics about nature.學科網(Zxxk.Com)

B.Topics about modern life.學科網(Zxxk.Com)

C.Topics about human feelings.學科網(Zxxk.Com)

16.What kind of book is A Garden of Poems?學科網(Zxxk.Com)

A.Shakespeare’s Poems.學科網(Zxxk.Com)

B.A collection of poems.學科網(Zxxk.Com)

C.Poems between the World Wars.學科網(Zxxk.Com)

17.What’s the conversation about?學科網(Zxxk.Com)

A.How to choose poems to read.學科網(Zxxk.Com)

B.How to buy a book on poetry.學科網(Zxxk.Com)

C.Kinds of poems and their topics.學科網(Zxxk.Com)

聽下面一段廣播,回答第18至20題。學科網(Zxxk.Com)

18.According to Mr Fox,what is the most important thing to take into consideration when buying a house?學科網(Zxxk.Com)

A.Convenience.               B.Location.                     C.Size.學科網(Zxxk.Com)

19.What problem may you be faced with when buying an old house?學科網(Zxxk.Com)

A.An old house usually has no garden.學科網(Zxxk.Com)

B.You may pay much money to mend the house.學科網(Zxxk.Com)

C.It’s difficult to invite an expert to check the house.學科網(Zxxk.Com)

20.What will be the next topic of this radio program?學科網(Zxxk.Com)

A.           Buying a garden.         B.Choosing a good school.      C.Buying a computer.學科網(Zxxk.Com)

第二部分  英語知識運用(共兩節,滿分45分)學科網(Zxxk.Com)

第一節單項選擇(共15小題;每小題1分,滿分15分)學科網(Zxxk.Com)

從A、B、C、D四個選項中,選出可填入空白處的最佳答案。學科網(Zxxk.Com)

21.Entering the bedroom,Jane was aware of something unusual but she couldn’t tell     it was exactly.學科網(Zxxk.Com)

A.which                     B.that                 C.how                D.what學科網(Zxxk.Com)

22.The architects have         the project of building a central theatre to the government and they are waiting for the reply.學科網(Zxxk.Com)

A.offered                   B.predicted         C.supplied          D.presented學科網(Zxxk.Com)

23.Finally he realized         a serious crime to inject drugs.However,he got no chance學科網(Zxxk.Com)

a new life.學科網(Zxxk.Com)

A.that;to start                                        B.it;to start學科網(Zxxk.Com)

C.what;starting                                  D.how;starting學科網(Zxxk.Com)

24.Not until a survivor had killed himself         of mental comfort after the big disaster.學科網(Zxxk.Com)

A.did we realize the importance               B.we realized the importance學科網(Zxxk.Com)

C.had we realized the importance             D.we have realized the importance學科網(Zxxk.Com)

25.―Sorry,miss.The make-up you required has been sold out right now.When it is       ,I’ll call you to let you know.學科網(Zxxk.Com)

―OK,that’s all right.學科網(Zxxk.Com)

A.provided                  B.arriving                  C.available                D.reliable學科網(Zxxk.Com)

26.In the course of urbanization,more and more land has been taken up for building factories or apartments,         less and less land is left for growing crops.學科網(Zxxk.Com)

A.regularly                 B.generally                C.namely                  D.virtually學科網(Zxxk.Com)

27.―I hope I am not disturbing you too much.

―Oh,         ,do come in.

A.of course                                                   B.certainly not

C.I think not                                                        D.I can stand it

28.“I was lucky.If I          to stay outside a little while,I         under the ruins.”recalled the boy,still in fear of the earthquake.

A.didn’t intend;had been buried              B.hadn’t intended:would have been buried

C.haven’t imended;would be buried    D.were not to intend:would be buried

29.We are born equal,but why don’t we have the access        the equal educational resources?

A.to                    B.with                C.of                   D.for

30.        by the higher grade pupils,the small kid refused to go to school,which puzzled his mom a lot.

A.Being threatened                           B.Having been threatening

C.To be threatened                           D.Having been threatened

31.Some virus sent via e-mails can        your computer system,so don’t download e-mails that are strange to you.

A.break down                                  B.break up

C.break into                                    D.break out

32.Carefully        by the scientists,the animal body was considered an ancient species frozen in the Ice Age.

A.measured         B.described         C.identified         D.summarized

33.―Satisfied with neither of the MP4s?Here is        model for you to choose.

一Letme have alook.

A.the more advanced                        B.a more advanced

C.the other advanced                        D.other more advanced

34.You’ll never know what life holds         for us.However,if you are always having the proper attitudes towards life,you’ll be well-prepared for whatever happens in the future.

A.in hand                                        B.in the distance

C.in store                                        D.in detail

35.The old couple was debating       to inform their son or not of the bad news      the father was seriously ill.

A.how;which                                 B.whether;that

C.whether;which                           D.if;that

第二節完形填空(共20小題;每小題1.5分,滿分30分)

閱讀下面短文,掌握其大意,然后從36-55各題所給的四個選項中,選出一個最佳答案。

It was a story told by a policeman working on a train.

In the dead of night,he was on duty   36   from carriage to carriage.   37   he saw a thief   38   the pocket of a sleeping passenger.   39   the shout of the policeman,the thief took to his heels and ran toward the    40   .The policeman was quite sure that the thief couldn’t jump out of the fast running train    41   he was out of his mind.So he   42   his pursuit(追趕),got in touch with his partner on the other side of the dining car using his cell phone and   43   him of the    44   .At this time,the train suddenly stopped.He saw the thief get onto an open window seeking to   45   .For the thief,this was his only   46   and quite probably he’d succeed.

The thief was about to iump    47   he heard a loud scream behind him.It was an untidy and dirty boy   48  a bleeding head.He knocked at a table when the train suddenly   49  .He was   50    picking emptied wine and water bottles in the dining car.After a moment of hesitation(猶豫),the thief   51   and rushed the child for first aid.

The thief was caught but on the other hand he was   52   .Why?The answer given by the policeman made the passengers shocked,because   53   the train stopped was a bridge thousands of feet high above a deep valley.

On one’s life journey,one   54    to help a fellow traveler by removing a blocking stone for him.Actually he is making a way for himself.Showing care for others sometimes means doing a favor to the person   55  

36.A.walking           B.fleeing             C.approaching           D.rushing

37.A.Obviously        B.Immediately     C.Surprisingly           D.Suddenly

38.A.wiping            B.picking            C.stealing                  D.robbing

39.A.At                   B.On                  C.Upon                     D.With

40.A.sleeping car     B.dining car        C.window                 D.bridge

41.A.unless              B.if                    C.in case                   D.as if

42.A.sped up           B.went on with    C.slowed down          D.put an end to

43.A.remained         B.informed         C.reminded                      D.recalled

44.A.situation          B.condition         C.location                 D.direction

45.A.observe           B.escape             C.run                        D.struggle

46.A.possibility        B.solution           C.opportunity            D.alternative

47.A.as                   B.when               C.while                     D.before

48.A.dying of          B.caring for        C.suffering from               D.struggling with

49.A.moved             B.stopped            C.slowed                   D.sped

50.A.once                B.then                C.too                        D.now

51.A.turned around B.turned up         C.turned out              D.turned away

52.A.unconscious     B.caring              C.unfortunate             D.lucky

53.A.why                B.where              C.what                      D.how

54.A.happens           B.attempts           C.promises                D.occurs

55.A.yourself           B.myself             C.itself                      D.himself

第三部分閱讀理解(共20小題;每小題2分,滿分40分)

閱讀下列短文,從每題所給的A、B、C、D四個選項中,選出最佳答案。

A

David Beckham joined US soccer team LA Galaxy 23 months ago,but less than two years later he is returning to AC Milan.The Italian giants are bringing the England midfielder to Italy on loan(租借)while the US football season is on a break.The deal is a clear signal of Beckham’s intention,who dreams of playing for England at the 2010 World Cup in South Africa.

England manager Fabio Capello had warned his team that anyone not playing over the next few months would not be considered for his team.Beckham is looking to solve the problem by changing Los Angeles for Milan,at least for a few months.

Milan’s current stars――including Kaka,Ronaldinho,Shevchenko and Inzaghi――are excited by Beckham’s joining their ranks.And the move should answer Beckham’s critics,who said that his focus had switched from playing football to making money,that his England career is still his number one consideration.

But it may not be enough.England has a series of promising young players who can play in Beckham’s position.David Bentley,Aaron Lennon and Shaun Wright-Phillips are all competing for a place in the team.

Beckham is well aware that 2010 is his last chance to play at the biggest sporting event on the planet.By moving to AC Milan,even just on loan,he is giving himself every chance of staying in the England team.It seems that he’s not ready to give up lifting the famous trophy yet.

56.How many football teams are mentioned in this passage?

A.One.             B.Two.             C.Three.           D.Four.

57.According to the passage,what does Beckham consider the most important?

A.Money.                                     B.Playing for England.

C.His football career.                     D.Playing in World Cup 2010.

58.Which of the following statements can be inferred from the passage?

A.Soccer players playing for the US can’t join England team.

B.Some of Beckham’s friends hold critical attitudes towards him.

C.World Cup 2010 is Beckham’s last chance to play at the biggest sporting event.

D.Beckham will face fierce competition if he wants to play for England in World Cup 2010.

59.The underlined word in the last paragraph is most probably       

A.a prize got in a competition                  B.a list of the players’ names

C.the responsibility for a player                D.a present given by the coach

B

Read the following two reports of the same event below and choose the right answers to the following questions.

ReportA

www.ks5u.com

A small group of fewer than a hundred people caused trouble for workers at our city’s most successful company today.The rude and noisy group made it difficult for the workers to get into the factory.Fortunately,most of the troublemakers left peacefully after the police arrived,but a few of them fought with the company’s guards and had to be taken to the police station.

Report B

More than ninety responsible and caring citizens made their voices heard today.The citizens,all of whom love nature and our planet,demonstrated outside the city’s worst polluter.Brave and strong,the activists talked to workers outside the factory and left a positive message about protecting the earth.The peaceful meeting ended when the company sent out a group of angry men armed with sticks to fight with the citizens.

60.What’s the most possible headline of Report A?

A.Workers on Strike again

B.Police Fight with the Activists

C.Troublemakers Disrupt Workers

D.Activists Protest against Polluters

61.Who does the Writer of Report B support?

A.The factory.                              B.The workers.

C.The police.                                D.The demonstrators.

62.Which of the following is the fact of the event reported?

A.Over 90 caring citizens made their voices heard today.

B.A group of people demonstrated outside the factory today.

C.Brave and strong activists talked to workers outside the factory.

D.The rude and noisy group stopped the workers entering the factory.

63.What’s the right match of the 2 reports and 3 pictures?

A.Picture 1 for Report A:Picture 2 for Report B

B.Picture 1 for Report B;Picture 2 for Report A

C.Picture 3 for Report A;Picture 2 for Report

D.Picture 3 for Report B:Picture 1 for Report A

C

Chen Yunlin,president of the Association for Relations Across the Taiwan Straits,visited Taiwan and signed an agreement to open direct shipping,mail and air routes services.

A survey indicated that 75%of the people surveyed were in favor of Chen’s visit Wong Yingru,a university student in Taipei,calls it a breakthrough in cross-Straits relations.She hopes mutual(相互的)recognition of education degrees will be reached soon between the two sides so that young Taiwanese like her will benefit.Last year Wong visited two universities in Fujian and decided to go on with her further study on the mainland.She said,“Compared with Taiwan,the mainland is much large,which often means more opportunities and resources.”

Mainland universities began to accept Taiwanese in 1986.In 2006,the mainla began to recognize the educational degrees issued by Taiwan universities.But mainland degrees still aren’t recognized in Taiwan.This has kept Taiwan students from coming to the mainland.In 2007,a total of 6,568 Taiwan students studied in mainland universities.The number was much lower than the 54,000 students from South Korea and the 18,640 from Japan.Lee Sichen,president of the National Taiwan University,said mutual recognition of degrees will benefit Taiwan universities.“The problem facing many Taiwan umversities is the lack of students caused by the falling birth rate for years in Taiwan.”he said.

Bai Mingran,a student in Beijing said,“In my university,there are exchang programs with American and European universities,but as far as I know,there is none with a Taiwan university.This is contrary to the fact that we share the same origin and should be closer to each other.Taiwan also has good universities.I hope one day 1 can go there.”

64.Why aren’t there many Taiwanese studying in mainland universities?

A.Because they are forbidden to study on the mainland.

B.Because mainland degrees aren’t recognized in Taiwan?

C.Because the mainland doesn’t recognize Taiwan degrees.

D.Because mainland universities provide fewer opportunities for students.

65.What problems are Taiwan universities faced with?

A.The low birth rate.                                   B.The shortage of students.

C.Fewer exchange students.                   D.A lack of educational resources.

66.From Bai Mingran’s words,we can learn

A.her university in Beijing is not a good one

B.she once studied in an American university

C.she wants more exchanges with students from Taiwan

D.her university has a closer tie with a Taiwan university

67.Which of the following is true according to this article?

A.Taiwan began to accept the mainland students in 2006.

B.The mainland recognized Taiwan educational degrees in 1986.

C.Compared with Japan,more Korean students study on the mainland.

D.Only after visiting mainland universities will many Taiwanese decide to study on the                                       mainland.

D

Every year mobile phones develop.Imagining what they will look like and be able to do in 2020 is really a challenge.To help,experts have outlined three major mobile trends that they believe will have become reality by then.

Our phones will be so smart in 12 years’ time that they’ll know everything about our situation and warn us when something needs our attention.This is the top prediction of both Nokia and Google.They predict that our cars and home appliances(家用電器)will be able to communicat

試題詳情

成都市2008~2009學年度上期期末調研考試學科網(Zxxk.Com)

高二生物學科網(Zxxk.Com)

注意事項:學科網(Zxxk.Com)

1.             本試卷分A卷和B卷。A卷滿分100分,B卷滿分50分,全卷總分150分?荚嚂r間為120分鐘。學科網(Zxxk.Com)

2.             答卷前請將密封線內的項目填寫清楚。學科網(Zxxk.Com)

3.答A卷前,考生務必將自己的姓名、考號、考試科目涂寫在機讀卡上。學科網(Zxxk.Com)

4.解答A卷的選擇題時,當每小題選出答案后,用鉛筆把答題卡上對應題目的答案標號涂黑,如需改動,用橡皮擦干凈后,再選涂其它答案。A卷選擇題答案不能寫在試卷紙上。學科網(Zxxk.Com)

除A卷的選擇題外,其余試題用藍、黑鋼筆或圓珠筆寫在試卷紙上。學科網(Zxxk.Com)

A卷(共100分)學科網(Zxxk.Com)

1.           關于構成生物體的元素的敘述中,正確的是學科網(Zxxk.Com)

A.C、H、O在生物細胞中含量最多,所以它們都是組成生物體的最基本的元素學科網(Zxxk.Com)

B.哺乳動物的血液中Ca鹽含量過低時,將出現抽搐學科網(Zxxk.Com)

C.落葉與正常葉相比Ca和Mg的含量基本不變學科網(Zxxk.Com)

D.大量元素B能促進花粉的萌發和花粉管的形成學科網(Zxxk.Com)

2.下列關于生物大分子的敘述中,正確的是學科網(Zxxk.Com)

A.蛋白質是以氨基酸為基本單位構成的生物大分子學科網(Zxxk.Com)

B.DNA是一類具有儲存遺傳信息、控制蛋白質合成功能的生物大分子學科網(Zxxk.Com)

C.淀粉、糖原、纖維素和核酸都是生物大分子學科網(Zxxk.Com)

D.糖元是植物細胞中普遍存在的一類重要的生物大分子學科網(Zxxk.Com)

3.人和動物體內的主要能源物質是學科網(Zxxk.Com)

A.糖類          B.蛋白質           C.脂肪         D.ATP學科網(Zxxk.Com)

4.下列對細胞膜的功能敘述中有誤的是學科網(Zxxk.Com)

A.細胞膜表面的糖被與細胞間的識別功能有關學科網(Zxxk.Com)

B.  細胞膜可選擇吸收某些物質學科網(Zxxk.Com)

C.  白細胞能吞噬某些病原體與其流動性有關學科網(Zxxk.Com)

D.細胞要選擇吸收的小分子都可以自由通過細胞膜學科網(Zxxk.Com)

學科網(Zxxk.Com)

5.某科學家在研究細胞膜運輸物質時發現有下列四種關系,分別用四種曲線表示學科網(Zxxk.Com)

在研究具體的物質X時,發現與曲線②和④相符,試問:細胞膜運輸物質x的方式是學科網(Zxxk.Com)

A.主動運輸      B.自由擴散         C.內吞和外排   D.無法判斷學科網(Zxxk.Com)

6.對線粒體和葉綠體的敘述中,正確的是學科網(Zxxk.Com)

A.都是雙層膜結構的細胞器            B.都有基質學科網(Zxxk.Com)

C.所含酶的功能都相同            D.都存在于真核細胞中學科網(Zxxk.Com)

7.右圖為細胞亞顯微結構示意圖,下列有關說法正確的是學科網(Zxxk.Com)

A.此圖可用來表示低等植物細胞的亞顯微結構學科網(Zxxk.Com)

學科網(Zxxk.Com)B.若此圖表示洋蔥根尖分生區細胞,應去掉的結構為2、9學科網(Zxxk.Com)

C.圖中含有脫氧核糖核酸的結構有3、5、6學科網(Zxxk.Com)

D.此圖若表示動物的性腺細胞,則不應有的結構為1、2、5學科網(Zxxk.Com)

8.細胞分裂過程中會出現的是學科網(Zxxk.Com)

A.染色體復制一次,細胞連續分裂兩次學科網(Zxxk.Com)

B.隨著著絲點的分裂,DNA分子數加倍學科網(Zxxk.Com)

C.同源染色體分離學科網(Zxxk.Com)

D.在赤道板位置上出現細胞板學科網(Zxxk.Com)

9.一個細胞核中有20條染色體,在連續進行兩次有絲分裂之后,產生的子細胞中有染色體學科網(Zxxk.Com)

     A.10條        B.20條         C.30條         D.40條學科網(Zxxk.Com)

10.某細胞在進行正常有絲分裂過程中,如果細胞內的染色體、染色單體、DNA分子三者的數量比是1∶2∶2,則該細胞所處的分裂時期是學科網(Zxxk.Com)

    A.前期或后期 B.中期或末期   C.前期或中期   D.后期或末期學科網(Zxxk.Com)

11.在顯微鏡下,鑒別一個正在進行有絲分裂的細胞是植物細胞還是動物細胞,最可靠的判斷依據是學科網(Zxxk.Com)

A.DNA分子是否復制          B.是否有紡綞體出現學科網(Zxxk.Com)

C.細胞質分裂成兩部分的方式     D.是否具有中心體學科網(Zxxk.Com)

12.下面是四位同學的實驗操作方法或結果,其中錯誤的一項是學科網(Zxxk.Com)

A.番茄汁中含有豐富的葡萄糖和果糖,宜用作還原糖鑒定的材料學科網(Zxxk.Com)

B.紙層析法分離葉綠體中的色素,其顏色從上到下依次是:橙黃色、黃色、藍綠色和黃綠色學科網(Zxxk.Com)

C.蛋白質與雙縮脲試劑作用產生紫色反應學科網(Zxxk.Com)

D.顯微鏡下觀察根尖的有絲分裂,在細胞呈正方形的區域易找到分裂期的細胞學科網(Zxxk.Com)

13.下列關于細胞分裂、分化、衰老和死亡的敘述中,正確的是學科網(Zxxk.Com)

A.細胞分化使各種細胞的遺傳物質產生差異,導致細胞的形態和功能不同學科網(Zxxk.Com)

B.個體發育過程中細胞的分裂、分化、癌變和死亡對于生物體都有積極的意義學科網(Zxxk.Com)

C.細胞分裂存在于個體發育整個生命進程中,細胞分化僅發生在胚胎發育階段學科網(Zxxk.Com)

D.細胞衰老和死亡是細胞生命活動的基本規律學科網(Zxxk.Com)

14.檢測某一植物組織細胞,發現分解有機物緩慢,酶的催化效率極低,該細胞正處在學科網(Zxxk.Com)

     A.分化時期     B.分裂時期     C.衰老時期     D.癌變時期學科網(Zxxk.Com)

15.一般情況下,能水解酶的是學科網(Zxxk.Com)

    A.淀粉酶    B.蛋白酶       C.脂肪酶       D.麥芽糖酶學科網(Zxxk.Com)

16.以下是對生物體ATP的有關敘述,其中正確的一項是學科網(Zxxk.Com)

A.ATP與ADP的相互轉化,在活細胞中是循環往復的學科網(Zxxk.Com)

B.ATP與ADP是同一種物質的兩種形態學科網(Zxxk.Com)

C.生物體內的ATP含量很多,從而保證了生物活動所需能量的持續供應學科網(Zxxk.Com)

D.ATP與ADP的相互轉化,使生物體內各項化學反應能在常溫常壓下快速又順利進行學科網(Zxxk.Com)

17.下列哪些生理活動會導致細胞內ADP的含量增加學科網(Zxxk.Com)

①小腸絨毛上皮細胞吸收②小腸絨毛上皮細胞對葡萄糖的吸收學科網(Zxxk.Com)

③血液中的乙醇進入肝細胞        ④甘油進入小腸絨毛上皮細胞學科網(Zxxk.Com)

    A.①②③④      B.①②         C.③④         D.①②③學科網(Zxxk.Com)

18.下列物質中,屬于光合作用光反應產物的是學科網(Zxxk.Com)

A.、ATP          B.[H ]、學科網(Zxxk.Com)

C.[H ]、、ATP           D.、化合物、學科網(Zxxk.Com)

19.在溫室內由于有適宜的陽光、溫度和充足的,植物長勢良好;如發生器突然發生故障,此時測定葉肉細胞內的、、ATP和[H]的含量變化情況,應該是學科網(Zxxk.Com)

A.下降、下降、上升、上升       B.下降、上升、上升、上升學科網(Zxxk.Com)

C.上升、上升、下降、下降       D.上升、下降、上升、上升學科網(Zxxk.Com)

20.暗反應中被還原的條件是學科網(Zxxk.Com)

A.ATP、酶、還原氫          B.ATP、氧氣、還原氫學科網(Zxxk.Com)

C.水、ADP                  D.、酶學科網(Zxxk.Com)

21.以紫色洋蔥鱗莖表皮為材料觀察植物細胞質壁分離現象,下列敘述錯誤的是學科網(Zxxk.Com)

A.在發生質壁分離的細胞中能觀察到紫色中央液泡逐漸縮小學科網(Zxxk.Com)

B.滴加0.3g/ml的蔗糖溶液比0.2g/ml蔗糖溶液引起細胞質壁分離所需時間短學科網(Zxxk.Com)

C.發生質壁分離的細胞放入清水中又復原,說明細胞保持活性學科網(Zxxk.Com)

D.用高濃度的溶液代替蔗糖溶液不能引起細胞質壁分離學科網(Zxxk.Com)

22.水分的吸收與礦質元素離子的吸收有著廣泛的聯系,下面的說法錯誤的是學科網(Zxxk.Com)

A.水分的吸收可以及時將礦質元素離子運走,因而可以促進礦質元素離子的吸收學科網(Zxxk.Com)

B.礦質元素離子的吸收增加了細胞液的濃度,因而能夠促進水分的吸收學科網(Zxxk.Com)

C.礦質元素離子的主要吸收部位與水分的主要吸收部位是相同的學科網(Zxxk.Com)

D.水分的吸收與礦質元素離子的吸收成正比例的關系學科網(Zxxk.Com)

學科網(Zxxk.Com)

23.N、P、K是植物需要量大的礦質元素,下列曲線與實際相符的是學科網(Zxxk.Com)

24.當土壤中缺少鎂元素時,植物首先受害的部位是學科網(Zxxk.Com)

A.新葉         B.老葉         C.新葉和老葉       D.幼葉和新葉學科網(Zxxk.Com)

25.下列有關人體內蛋白質代謝過程的敘述,正確的是學科網(Zxxk.Com)

A.在健康成年人體內,蛋白質的合成和分解是動態平衡的學科網(Zxxk.Com)

B.在健康人的尿液中,尿素的含量較高說明其食物結構中含較多的蛋白質學科網(Zxxk.Com)

C.蛋白質消化的最終產物是二氧化碳、水和尿素學科網(Zxxk.Com)

D.通過脫氨基作用生成的含氮部分需轉變成尿素才能排出體外學科網(Zxxk.Com)

26.關于物質代謝的敘述,錯誤的是學科網(Zxxk.Com)

A.葡萄糖可以轉變為脂肪

B.氨基酸的不含氮部分能轉變成糖類

 C.肌糖元轉變成葡萄糖均會釋放到血液中

D.  動物的物質代謝過程主要發生在細胞內

27.下列關于線粒體的敘述,正確的是

A.能進行呼吸作用的細胞一定含有線粒體

B.動物心臟細胞中的線粒體較多

C.線粒體中進行有氧呼吸的第二階段釋放大量能量

D.線粒體能直接為有絲分裂提供能量

28.下列生物化學反應在真核細胞的細胞質基質中進行的

A.葡萄糖的無氧分解              B.丙酮酸的徹底氧化分解

C.有氧呼吸的第二階段            D.有氧呼吸的第三階段

29.需氧型生物區別于厭氧生物的特點

A.分解有機物過程中需要氧氣          B.生活在陸地上

C.細胞中一定有線粒體            D.能合成有機物

學科網(Zxxk.Com)

30.下圖中能說明胚芽鞘尖端是感受光刺激部位的最佳實驗組合是

3l.在子房發育的早期,除去發育著的種子,果實則停止發育,原因是

A.營養來源被切斷                B.果實的光合作用停止

C.生長素的來源被切斷            D.果實的呼吸作用停止

32.正常人在饑餓狀態下,體內血液

①葡萄糖濃度大幅度下降  ②葡萄糖濃度相對穩定    ③胰島素含量相對減少

④胰島素含量相對增加    ⑤胰高血糖素含量相對增加⑥胰高血糖素含量相對減少

  A.①③⑥          B.②③⑥           C.①④⑤           D.②③⑤

學科網(Zxxk.Com)33.右圖為反射弧結構示意圖,下列說法中正確的

A.刺激③處,該處細胞膜電位變為外正內負

B.若從③處切斷神經纖維,刺激④,E不能產生反應

C.興奮在①處神經纖維上傳導速度較在②處快

D.若在④處施加一適宜刺激,圖中①~⑤處能測到興奮的只有⑤

34.下列關于神經調節的敘述正確的是

A.條件反射是高級神經活動的基本方式

B.特定的反射需要特定的反射弧和適宜的刺激

C.小天鵝印隨學習的生理基礎是條件反射

D.興奮在經過突觸結構時的傳導不一定是單向的

35.下列敘述錯誤的是

A.果樹嫁接屬于營養生殖

B.青霉、曲霉等霉菌普通的生殖方式是孢子生殖

C.馬鈴薯塊莖上的芽長成一株植物是出芽生殖

D.使后代產生廣泛變異的是有性生殖

36.下列曲線表示減數分裂過程中DNA含量變化的是

學科網(Zxxk.Com)37.從顯微鏡下看到一個正處在減數第二次分裂的高等動物細胞,如下圖所示,則此動物的初級精母細胞中,四分體數、染色單體數、DNA分子數依次為

A.3,3,6          B.3,6,6

C.3,6,12         D.3,12,12

38.細胞減數第一次分裂過程中會出現

A.同源染色體配對(聯會)     B.姐妹染色單體分離

C.同源染色體彼此分離       D.四分體中的非姐妹染色單體之間交叉、互換

39.下列關于大豆發育的敘述正確的是

A.個體發育的起點是種子

B.種子無胚乳是由于胚珠內極核未受精

C.收獲的果實有時出現“空癟!笔怯捎谂咧閮嚷鸭毎词芫

D.對未授粉的花蕾噴灑一定濃度的生長素就能避免“空癟!

40.下列有關生物個體發育的敘述中,錯誤的是

A.生物的個體發育是受精卵經細胞分裂、組織分化和器官形成直到發育成性成熟個體的過程

B.各種生物的個體發育過程是不完全相同的

C.個體發育是從精子和卵細胞結合到發育成具有繁殖能力的新個體的過程

D.高等動物的個體發育包括胚胎的發育和胚后發育

題號

A卷(非選擇題)

B卷

B卷總分

總分

總分人

得分

 

 

 

 

 

 

 

得分

評卷人

 

 

試題詳情

成都市2008~2009學年度上期期末調研考試學科網(Zxxk.Com)

高二物理學科網(Zxxk.Com)

注意事項:學科網(Zxxk.Com)

1.             本試卷分A卷和B卷。A卷滿分100分,B卷滿分50分,全卷滿分150分?荚嚂r間120分鐘。學科網(Zxxk.Com)

2.答卷前請將密封線內的項目填寫清楚。學科網(Zxxk.Com)

3.答A卷時,選擇題選出答案后,用鉛筆把機讀卡上對應題目的答案標號涂黑;如需改動,用橡皮擦干凈后,再選涂其他答案;非選擇題用鋼筆或圓珠筆直接寫在試卷紙上。學科網(Zxxk.Com)

4.答B卷時,請將答案(包括選擇題)用鋼筆或圓珠筆直接寫在試卷紙上。學科網(Zxxk.Com)

5.考試結束,監考員將本試卷和答題卡一并收回。學科網(Zxxk.Com)

A卷(100分)學科網(Zxxk.Com)

試題詳情

成都市2008~2009學年度上期期末調研考試學科網(Zxxk.Com)

高二政治學科網(Zxxk.Com)

本試卷分A、B卷。A卷100分,B卷50分,全卷總分150分?荚嚂r間120分鐘。學科網(Zxxk.Com)

A卷(共100分)學科網(Zxxk.Com)

注意事項:學科網(Zxxk.Com)

1.答A卷前,考生務必將自己的姓名、考號、考試科目用鉛筆填寫在答題卡上。學科網(Zxxk.Com)

2.每小題選出答案后,用鉛筆把答題卡上對應題目的答案標號涂黑,如需改動,用橡皮擦干凈后,再選涂其他答案,不能答在試卷上。學科網(Zxxk.Com)

3.考試結束,監考員將本試卷和答題卡一并收回。學科網(Zxxk.Com)

試題詳情

成都市2008~2009學年度上期期末調研考試學科網(Zxxk.Com)學科網(Zxxk.Com)

高二地理學科網(Zxxk.Com)學科網(Zxxk.Com)

本試卷分A、B卷。A卷l00分,B卷50分,全卷總分150分?荚嚂r間120分鐘。學科網(Zxxk.Com)學科網(Zxxk.Com)

題號

A卷

B卷

總分

得分

 

 

 

 

學科網(Zxxk.Com)學科網(Zxxk.Com)

A卷(共100分)學科網(Zxxk.Com)學科網(Zxxk.Com)

注意事項學科網(Zxxk.Com)學科網(Zxxk.Com)

1.           答A卷前,考生務必將自己的姓名、考號、考試科目用鉛筆填寫在答題卡上。學科網(Zxxk.Com)學科網(Zxxk.Com)

2.答A卷選擇題時,每小題選出答案后,用鉛筆把答題卡上對應題目的答案標號涂黑,如需改動,用橡皮擦干凈后,再選涂其他答案,不能答在試題卷上。學科網(Zxxk.Com)學科網(Zxxk.Com)

3.考試結束,監考員將本試卷和答題卡一并收回。學科網(Zxxk.Com)學科網(Zxxk.Com)

試題詳情

成都市2008~2009學年度上期期末調研考試學科網(Zxxk.Com)

高二化學學科網(Zxxk.Com)

學科網(Zxxk.Com)

注意事項:學科網(Zxxk.Com)

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試題詳情

四川省蒼溪中學校

2009年高考理科綜合選擇題專項訓練(六)

可能用到的相對原子質量: H  1    C  12    O  16

1.癌癥患者腹部積水后,為利尿排水應靜脈輸送主要成分是                                 (    )

A.復合氨基酸                                        B.葡萄糖和維生素

C.無機鹽                                               D.血漿蛋白

2.在生物體內不消耗水的生理過程有                                                                    (    )

A.光合作用暗反應                                 B.有氧呼吸

3.圖1是一個陸地生態系統食物網的結構模式圖。

下列敘述中,不正確的是          (    )

       A.在該食物網中,F和D是競爭關系

       B.在該食物網中,G屬于三級消費者和次級消費者

       C.H獲得最少能量的食物鏈是“A→C→D→H”

       D.如果C種群的數量下降10%,則H種群的數量

不會發生明顯變化                                          圖 1

4.關于微生物的結構說法錯誤的是                                                                        (    )

       A.不是所有的細菌都有芽孢

       B.不是所有的細菌都有核糖體

       C.細菌和酵母菌都可以有質粒

       D.微生物相對表面積大,能快速與外界進行物質交換

5.關于單克隆抗體的說法,正確的是                                                                    (    )

       ①免疫過的淋巴B細胞與骨髓瘤細胞融合后雜交細胞產生的抗體

       ②單克隆抗體制備過程中經過兩次篩選

       ③由于淋巴B細胞能產生抗體,骨髓瘤細胞不能產生抗體,所以它們融合后產生的抗體

叫單克隆抗體,不叫多克隆抗體

       ④單一的抗原進入動物體內后,從動物體內提取的抗體

       ⑤化學性質單一,特異性強,可用于防病、治病

       A.②⑤                   B.②④                   C.③⑤                   D.①③④

6.下列物質中哪些能和雙縮脲試劑發生顏色反應                                                   (    )

       ①干擾素  ②維生素C  ③甲狀腺激素  ④抗毒素  ⑤青霉素  ⑥生長激素   

       A.②⑤⑥               B.③④⑥               C.①④⑥               D.①③⑤

7.在下列各說法中都包含有前后兩個數值,其中前者小于后者的是                       (    )

       A.HF與HCl的沸點                               B.乙酸乙酯與溴苯的密度

       C.正戊烷與新戊烷的沸點                      D.鋁與鎂的硬度

8.某溶液能使pH試紙先變藍色后褪色,則該溶液中大量共存的離子可能是          (    )

A.K+、I、AlO、HCO、MnO        B.Na+、S2、NO、SO、SO

C.Fe2+、Al3+、NH、NO、F               D.K+、Na+、ClO、Cl、CO

9.A、B、C、D、E是原子序數依次增大的五種短周期主族元素,其原子半徑按D、E、

       B、C、A的順序依次減小,且B和E同主族,下列推斷不正確的是                (    )

       A.A、B、D一定在不同周期                  B.A、D可能在同一主族

       C.C和D的單質可能形成離子化合物     D.D、B、C原子的最外層電子數依次減小

10.下列說法正確的是                                                                                           (    )

       A.不用其它試劑無法鑒別下列四種溶液:Na2CO3、Al2(SO4)3、NaCl、NaHSO4

       B.可以用分液漏斗分離下列三組液體混合物:硝基苯和水、油酸和水、乙酸乙酯和乙醇

       C.在由水電離出的c(H+)=1×10-14mol/L的溶液中可以大量存在Na+ K+、NO、HCO

           離子

       D.實驗室保存少量液溴和白磷常用水液封

11.有m1gKCl飽和溶液,其溶質的質量分數為,改變溫度或蒸發水后析出m3gKCl晶體,

       母液質量為m2g,其溶質的質量分數為。則下列關系一定正確的是             (    )

       A.一定大于                                 B.m1-m3=m2

       C.m1-m2=m3                                                           D.原條件下KCl的溶解度等于100g

20090421

       溶液不具有的性質或關系是                                                                             (    )

       A.c(K+)=2c(HCO)                                                                B.c(K+)>c(HCO)>c(OH)>c(H+)

       C.c(HCO)+c(CO)+c(H2CO3)=c(Cl)  D.水電離出的c(H+)>10-7mol/L

 

 

13.將1molA、4molB、2molC和2molD放入體積可變的密閉容器中,發生如下反應:

   A(g)+4B(g)     2C(g)+2D(g),反應達到平衡時,容器中各成分物質的量分別

       為:n(A)、n(B)、n(C)、n(D),在溫度和壓強不變的條件下,再分別加入A、B、

       C、D各1mol,重新達到平衡時,則某一物質或總物質的量(用n′表示,單位為mol)

       取值范圍正確的是                                                                                           (    )

       A.n′(A)≤n(A)                                     B.n′(總)>11.75mol

       C.2mol< n′(C)<3mol                            D.n′(總)可能為14.5mol

14.下列說法中正確的是                                                                                        (    )

       A.天然放射現象中射線是大量的原子被激發后,從原子中脫出的內層電子

       B.由于每種原子都有自己的特征譜線,故可以根據原子光譜來鑒別物體和確定其化學

組成

       C.原子核是由質子、中子和核子組成的

       D.由于原子內的核外電子不停地繞核做加速運動,所以原子要向外輻射能量,這就是

15.隨著中國電信業的發展,國產手機在手機市

標準型3.7伏鋰離子電池

充電源限制電壓:4.2V

執行標準:GB/T18287-2000

       所示是中國科健股份有限公司生產的一塊手

       機電池外殼上的文字說明,由此可知此電

待機時間:48小時

警告:切忽投入火中。!

只能使用于指定充電器

       別是                         (    )

制造廠商:中國科健股份有限公司

地址:深圳蛇口工業六路科健大廈

C.3.7V  14.58mA  D.3.7V  700mA

16.質量為m的車中用細線懸掛一個質量較小                     圖  2

的球,車在水平拉力作用下在東西走向的水平公路上作直線運動,此時懸線向東偏且與

豎直方向成45°角,當撤去拉力后,懸線向西偏且與豎直方向成45°角,設小車在運

動過程中阻力保持不變,則關于拉力的大小和方向,下列敘述正確的是           (    )

       A.水平拉力大小為mg,方向向西         

       B.水平拉力大小為mg,方向向東

       C.水平拉力大小為2mg,方向向西       

       D.水平拉力大小為2mg,方向向東

 

 

 

 

 

 

 

       兩顆子彈,沿同一直線,分別以水平速度,從兩側

       同時射入木塊。已知A、B兩子彈嵌入木塊中的深度分別為

       ,且,此過程中木塊對A、B

       兩子彈的阻力大小相等,且木塊始終保持靜止,如圖3所示。       

       則A、B兩子彈在射入木塊前                   (    )            圖 3

       A.速度>                                       B.A的動能大于B的動能

       C.A的動量大于B的動量                      D.A的質量大于B的質量

       圓柱形絕熱氣缸并固定,氣缸與車廂底板成角。有一

       重為G的活塞,把一定質量的理想氣體密封在氣缸內,設

20090421

       高時,則此時車廂的運動狀態可能變為          (    )

       A.仍保持勻速向左運動                          B.勻加速向左運動

       C.勻減速向左運動                                 D.勻加速向右運動       圖  4

19.質量相同的兩個帶電粒子M、N以相同的速度沿垂直于電場方向射入

兩平行板間的勻強電場中,M從兩極板正中央射入,N從下極板邊緣

到打到上板的過程中                (    )

       A.它們運動的時間

       B.它們電勢能減少量之比

       C.它們所帶電荷量之比

       D.它們的動量增量之比                 圖  5

20.粗細均勻的電阻絲圍成如圖6所示的線框abcde置于正方形有界勻強磁場中,磁場方向

       垂直于線框平面,現使線框以同樣大小的速度勻速地沿四個不同方向平動進入磁場,并

       且速度方向始終與線框先進入磁場的那條邊垂直,則在通過圖示位置時,線框ab邊兩端

 

 

 

 

 

 

                                  圖  6

21.如圖7所示,在足夠大的光滑水平面上放有兩質量相等的物塊A和B,其中A物塊連接

       一個輕彈簧并處于靜止狀態,B物體以初速度向著A物塊運動。當物塊與彈簧作用時,

       正確的是                                                                                                         (    )

 

 

 

 

 

 

22.某同學用如圖(3)所示的電路進行小電機的輸出功率

的研究,其實驗步驟如下所述,閉合電鍵后,調節滑

運變阻器,電動機未轉動時,電壓表的讀數為U1,電

流表的讀數為I1;再調節滑動變阻器,電動機轉動后電

壓表的讀數為U2,電流表的讀數為I2,則此時電動機的

輸出功率為                             (    )

       A.                              B.

       C.U2I2                                                   D.

擦力的變化情況是    (   )

       A.f一直增大

       B.f一直減小

       C.f先減小后增大

       D.f先增大后減小

 

大小均為B,方向分別垂直紙面向里和向外,磁

場寬度均為L,在磁場區域的左側相距為L處,

有一邊長為L的正方形導體線框,總電阻為R,

且線框平面與磁場方向垂直,F使線框以速度v

勻速穿過磁場區域。若以初始位置為計時起點,

規定電流逆時針方向時的電流和電動勢方向為正,

B垂直紙面向里時為正,則以下四個圖象中對此

過程描述不正確的是(    )

 

 

 

 

 

 

 

 

 

 

 

 

 

 

25.用一金屬窄片折成一矩形框架水平放置,框架左邊上有一極小開口。勻強磁場大小為B,方向水平,如圖(2)所示,框架以速度v1向右勻速運動,一帶電滴質量為m,電量為q,以速度v2從右邊開口處水平向左射入。若油滴恰能在框架內做勻速圓周運動,則

       A.油滴帶正電,且逆時針做勻速圓周運動

       B.油滴帶負電,且逆時針做勻速圓周運動

       C.圓周運動的半徑一定等于

      D.油滴做圓周運動的周期等于

試題詳情

高三化學攻關三十六法之――守恒法

 

守恒法是高考中常考常用的一種解題方法。系統學習守恒法的應用,對提高解題速率和破解高考難題都有很大的幫助。

●難點磁場

請試做下列題目,然后自我界定學習本篇是否需要。

現有19.7 g由Fe、FeO、Al、Al2O3組成的混合物,將它完全溶解在540 mL 2.00 mol?L1的H2SO4溶液中,收集到標準狀況下的氣體8.96 L。已知混合物中,Fe、FeO、Al、Al2O3的質量分數分別為0.284、0.183、0.274和0.259。欲使溶液中的金屬陽離子完全轉化為氫氧化物沉淀,至少應加入2.70 mol?L1的NaOH(aq)體積是________。

●案例探究

[例題]將 CaCl2 和 CaBr2 的混合物 13.400 g溶于水配成 500.00 mL 溶液,再通入過量的 Cl2,完全反應后將溶液蒸干,得到干燥固體 11.175 g。則原配溶液中,c(Ca2)∶c(Cl)∶c(Br)為

A.3∶2∶1                   B.1∶2∶3                    C.1∶3∶2                    D.2∶3∶1

命題意圖:考查學生對電荷守恒的認識。屬化學教學中要求理解的內容。

知識依托:溶液等有關知識。

錯解分析:誤用電荷守恒:

n(Ca2 )= n(Cl) + n(Br),錯選A。

解題思路:1個 Ca2 所帶電荷數為2,則根據溶液中陽離子所帶正電荷總數等于陰離子所帶負電荷總數,知原溶液中:

2n(Ca2) = (Cl) + (Br)

將各備選項數值代入上式進行檢驗可知答案。

答案:D

●錦囊妙計

化學上,常用的守恒方法有以下幾種:

1.電荷守恒

溶液中陽離子所帶正電荷總數等于陰離子所帶負電荷總數。即:陽離子物質的量(或濃度)與其所帶電荷數乘積的代數和等于陰離子物質的量(或濃度)與其所帶電荷數乘積的代數和。

2.電子守恒

化學反應中(或系列化學反應中)氧化劑所得電子總數等于還原劑所失電子總數。

3.原子守恒

系列反應中某原子(或原子團)個數(或物質的量)不變。以此為基礎可求出與該原子(或原子團)相關連的某些物質的數量(如質量)。

4.質量守恒

包含兩項內容:①質量守恒定律;②化學反應前后某原子(或原子團)的質量不變。

此外,還有物料平衡,將編排在第16篇――水的電離中。

●殲滅難點訓練

1.(★★★)將 3.48 g Fe3O4 完全溶解在 100 mL 1.00 mol/L 的 H2SO4(aq) 中,然后加入 K2Cr2O7(aq)25.00 mL,恰好使 Fe2全部轉化為 Fe3,且 Cr2O全部轉化為 Cr3。則 K2Cr2O7 的物質的量濃度為__________。

2.(★★★)某露置的苛性鉀經分析含水:7.62%(質量分數,下同)、K2CO3:2.38%、KOH :90.00%。取此樣品 1.00 g 放入 46.00 mL 1.00 mol?L1 的 HCl(aq) 中,過量的 HCl 可用 1.070 mol/L KOH(aq)中和至中性,蒸發中和后的溶液可得固體_______克。

3.(★★★★)A、B、C三種物質各15 g,發生如下反應:

A+B+CD

反應后生成D的質量為30 g。然后在殘留物中加入10 g A,反應又繼續進行,待反應再次停止,反應物中只剩余C,則下列說法正確的是(   )

A.第一次反應停止時,剩余B 9 g

B.第一次反應停止時,剩余C 6 g

C.反應中A和C的質量比是5∶3

D.第二次反應后,C剩余5 g

4.(★★★★★)(1)中學教材上圖示了NaCl晶體結構,它向三維空間延伸得到完美晶體。NiO(氧化鎳)晶體的結構與NaCl相同,Ni2與最近O2的核間距離為a×108cm,計算NiO晶體的密度(已知NiO摩爾質量為74.7 g?mol1)。

 

 

 

 

 

 

 

 

 

圖1―1

(2)天然的和絕大部分人工制備的晶體,都存在各種缺陷,例如在某種NiO晶體中就存在如圖1―1所示的缺陷:一個Ni2空缺,另有兩個Ni2被兩個Ni3所取代。其結果晶體仍呈電中性,但化合物中Ni和O的比值卻發生了變化。某氧化鎳樣品組成為Ni0.97O,試計算該晶體中Ni3與Ni2的離子數之比。

 

 

 

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