Question

5．Hair has always been an important sign of beauty，especially true for women．Next to the face，hair is one of the main qualities people look for when they consider a woman's beauty． Whether long or short，curly or straight，hair often gets a lot of attention．
Each hair grows independently of other hairs．Not all hairs experience the same period of growth at the same time．During the period of active growth，which is called Anagen，hair grows at a rate of about or one centimeter a month．About eighty five percent of hair follicles（毛囊） are going through this process at any given time．This period can last from two to six years．
The Catagen period of hair growth comes next．It is then that hair growth begins to slow down．This period usually lasts two or three weeks．Finally，hair growth comes to a complete stop and the hairs begin to fall out．This period is known as Telogen．Once the Telogen period has ended，the hair growth process begins again．
So what happens when a person has trouble growing hair or suffers from hair loss？Your genes control how fast or how long your hair will grow．Some people have a longer than usual anagen growth period．These people may be able to grow more hair than the average person．
However，others struggle to grow shoulder length hair．These people have a shorter than normal anagen period．
Your health can also affect hair growth．Poor nutrition can cause some hair follicles to stop growing or cause the hairs that grow to become weak or thin．Problems with hair growth can result from thyroid problems or other conditions．Health experts say people who experience a sudden increase in hair loss should seek medical advice．

68．How many periods of hair growth are discussed in the passage？B   
    A．Two．          B．Three．           C．Four．          D．Five．
69．The Catagen period is a period thatD．
    A．the hairs start to fall out                   B．the hairs grow at a fast rate
    C．hair growth stops completely                  D．hair growth begins to slow down
70．What can be learned from the passage？C
    A．Hair grows no more after the Telogen period．
    B．One with shoulder length hair must grow more hair．
    C．Hair growth has much to do with nutrition and health．
    D．Only a few hair follicles go through the Anagen period．
71．What is suggested by health experts when one suffers from a sudden increase in hair loss？B
    A．Changing his genes．                     B．Going to see a doctor．
    C．Cutting all his hair off．               D．Eating more vegetables．

Answer 1

分析 本文主要講述了頭發的生長分為三個時期：1、生長期--頭發積極生長；2、退行期--頭發生長開始減慢；3、靜止時期--頭發生長完全停止并開始脫落．此外，頭發的生長與營養和健康有很大關系．如果你脫發很嚴重，應該立即看醫生．

解答 68．B 細節推理題．根據第二段During the period of active growth，which is called Anagen，可知頭發積極生長的時期稱為生長期；根據第三段The Catagen period of hair growth comes next．可知生長期之后是退行期；根據第三段hair growth comes to a complete stop and the hairs begin to fall out．This period is known as Telogen．可知頭發生長完全停止并開始脫落的時期被稱為靜止時期．由此可知，頭發生長分為三個時期．故選B．
69．D 細節判斷題．根據第三段hair growth comes to a complete stop and the hairs begin to fall out．可知在退行期，頭發生長開始減慢．故選D．
70．C 細節理解題．根據最后一段Your health can also affect hair growth．Poor nutrition can cause some hair follicles to stop growing or cause the hairs that grow to become weak or thin．可知人的健康影響頭發的生長．缺乏營養可能會導致一些毛囊停止生長或引起頭發生長減慢．由此推知，頭發的生長與營養和健康有很大關系．故選C．
71．B 細節推理題．根據最后一段Health experts say people who experience a sudden increase in hair loss should seek medical advice．可知健康專家說如果一個人突然脫發很嚴重，那么他應該尋求醫生的意見．故選B．

點評 本文考察學生的理解推斷能力以及細心程度，只要抓住文章的關鍵詞，采用尋讀的方法查找細節，就能找到正確答案．