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【单选题】

In sport the es are separate. Women and men do not run or swim in the same races.Women are less strong than men. That at least is what people say. Women are called" the weaker " ,or, if men want to please them, "the fair ". But boys and girls are taught together at schools and universities. There are women who are famous Prime Ministers, scientists and writers. And women live longer than men. A European woman can expect to live until the age of 74, a man only until he is 68. Are women’ s bodies really weaker The fastest men can run a mile in 4 minutes. The best women need 4.5 minutes. Women’ s speeds are always slower than men’ s, but some facts are surprising. Some of the fastest women swimmers today are age girls. One of them swam 400 metres in 4 minutes 21.2 seconds when she was only 16. The first" Tarzan" in films was an Olympic swimmer, Johnny Weissmuller. His fastest 400 metres was 4 minutes 59.1 seconds, which is 37.9 seconds slower than a girl50 years later !This does not mean that women are catching men up. Conditions are very different now, and sport is much more serious. It is so serious that some women athletes are given hormone(荷尔蒙)injections. At the Olympics a doctor has to check whether the women athletes are really women or not. It seems sad that sport has such problem. Life can be very complicated when there are two separate es ! In this passage the author implies that__________ .

A.
women are weaker than men, but faster
B.
women are slower than men, but stronger
C.
men are not always stronger and faster than women
D.
men are faster and stronger than women
题目标签:荷尔蒙
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【单选题】有人认为,高水平的睾丸激素荷尔蒙是导致男性心脏病发作的主要原因。不过,这种观点是错误的,因为有心脏病男性的睾丸激素水平一般比没有心脏病的男性低。上面的论述是基于下列哪一个假设的?( )

A.
对某个缺乏维生素的孕妇的日常饮食进行检测,确定其中维生素的含量
B.
对某个不缺乏维生素的孕妇的日常饮食进行检测,确定其中维生素的含量
C.
对孕妇的科学食谱进行研究,以确定有利于孕妇摄入足量维生素的最佳食谱
D.
对日常饮食中维生素足量的一个孕妇和一个非孕妇进行检测,并分别确定她们是否缺乏维生素

【单选题】人的体味中存在两种名为AND和EST的荷尔蒙,结构如图所示。下列说法不正确的是 [ ]

A.
AND和EST都能使酸性KMnO4溶液褪色
B.
AND和EST两者的相对分子质量之差为14
C.
AND和EST分别与足量氢气加成后的两种生成物 互为同系物
D.
AND和EST与溴水完全反应消耗溴单质的物质的量之比为2:3