题目内容
5．Both men and women are living longer these days in industrialized countries．（31）A In general，they can expect to live six or seven years more than men．One reason for this is biological．One important biological factor that helps women live longer is the difference in hormones between men and women．（32）G Between the ages of about 12and 50，women produce hormones that are involved in fertility（生育能力）．These hormones also have a positive effect on the heart and blood flow．In fact，women are less likely to have high blood pressure or to die from heart attacks．
（33）D They help the body defend itself against some kinds of infections．This means that women generally get sick less often and less seriously than men．The common cold is a good exa-mple：women，on average，get fewer colds than men．（34）C Scientists are still not exactly sure how they influence aging，but they believe that they do．Some think that a woman's body cells have a tendency to age more slowly than a man's．Others think that a man's body cells have a tendency to age more quickly．（35）E
A．However，women，on average，live longer．
B．The biological factor plays an important part．
C．Women are also helped by their female genes．
D．The female hormones also protect the body in another way．
E．Recent research seems to support both of these possibilities．
F．Therefore，women are more healthy than men and can live a better life．
G．Hormones are chemicals which are produced by the body to control various body functions．
分析 文章是一篇科技报道，讲述了女人比男人长寿的原因．现代社会人们普遍比过去长寿了，但女人更长寿．其中一个重要的原因是生物因素：女人和男人的生物荷尔蒙不同，女性因为生育的原因，分泌的荷尔蒙对心脏和血液都有良性的影响，让女人更少受高血压和心脏病的困扰．同时，女性荷尔蒙还可以对抗感染，就连普通的感冒，女人也比男人更有抵抗力．科学家们现在还没弄清楚基因是如何影响人肌体的老化，但可以肯定的是女性的身体细胞老化的速度比男人慢．
解答 31．A 32．G 33．D 34．C 35．E
31．A 文章后面说they can expect to live six or seven years more than men．她们比男人可以多活六到七年，可以推测前面应该讲的是女人．故选A．
32．G 文章前一句说One important biological factor that helps women live longer is the difference in hormones between men and women．男女荷尔蒙不同；后一句说women produce hormones that are involved in fertility女性的荷尔蒙与生育有关，可以知道这里讲的应该是荷尔蒙的问题．故选G．
33．D 前面说到These hormones also have a positive effect on the heart and blood flow．荷尔蒙对心脏和血液有好处；后面说They help the body defend itself against some kinds of infections．它们还可以对抗感染，可以推测这里讲的应该是荷尔蒙保护身体的另外一种方式．故选D．
34．C 后面一句是Scientists are still not exactly sure how genes influence aging科学家们还不清楚基因是如何对抗衰老的，可以知道前面应该说的是基因．故选C．
35．E 文章最后说Some think that a woman's body cells have a tendency（向） to age more slowly than a man's．Others think that a man's body cells have a tendency to age more quickly．女性身体细胞老化得比男人慢，或者说男人的细胞必女人老化得快．这两种可能性都得到了目前研究的支持，故选E．
点评 做七选五题目时要注意以下规则：1．放进去通顺，这一点是基础．凡不通顺的必错无疑； 2、选项中有单词、词组、句子成分或与所选答案所在段内容重合；3、选项与其上句或下句之间有必然的逻辑关系； 4、选项全部内容都属于正确答案所在段．有时备选答案中可能含有甲乙两项内容，这时，只有当甲和乙都归属于本段时，答案才是正确的．
