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(fā)的生長(zhǎng)分為三個(gè)時(shí)期：1、生長(zhǎng)期--頭發(fā)積極生長(zhǎng)；2、退行期--頭發(fā)生長(zhǎng)開(kāi)始減慢；3、靜止時(shí)期--頭發(fā)生長(zhǎng)完全停止并開(kāi)始脫落．此外，頭發(fā)的生長(zhǎng)與營(yíng)養(yǎng)和健康有很大關(guān)系．如果你脫發(fā)很?chē)?yán)重，應(yīng)該立即看醫(yī)生．

解答 68．B 細(xì)節(jié)推理題．根據(jù)第二段During the period of active growth，which is called Anagen，可知頭發(fā)積極生長(zhǎng)的時(shí)期稱(chēng)為生長(zhǎng)期；根據(jù)第三段The Catagen period of hair growth comes next．可知生長(zhǎng)期之后是退行期；根據(jù)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(fā)生長(zhǎng)完全停止并開(kāi)始脫落的時(shí)期被稱(chēng)為靜止時(shí)期．由此可知，頭發(fā)生長(zhǎng)分為三個(gè)時(shí)期．故選B．
69．D 細(xì)節(jié)判斷題．根據(jù)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(fā)生長(zhǎng)開(kāi)始減慢．故選D．
70．C 細(xì)節(jié)理解題．根據(jù)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(fā)的生長(zhǎng)．缺乏營(yíng)養(yǎng)可能會(huì)導(dǎo)致一些毛囊停止生長(zhǎng)或引起頭發(fā)生長(zhǎng)減慢．由此推知，頭發(fā)的生長(zhǎng)與營(yíng)養(yǎng)和健康有很大關(guān)系．故選C．
71．B 細(xì)節(jié)推理題．根據(jù)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(zhuān)家說(shuō)如果一個(gè)人突然脫發(fā)很?chē)?yán)重，那么他應(yīng)該尋求醫(yī)生的意見(jiàn)．故選B．

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