请快点给我解难好吗??

yunyun

[em03]
   (1) 题是:
      Astronauts who experience weithtlessness frequently get motion sickness. The astronauts see their own motion relative to passing objects, but while the astronauts are weightless their inner ears indicate that their bodies are not moving. The astronauts' experience is best explained by the hypothesis that conflicting information received by the brain about the body's motion causes motion sickness.
    问加强.
    我选C----Some automobile passengers whose inner ears indicate that they are moving and who have a clear view of the objects they are passing get motion sickness.因为此项很好的体现了原题中的'conflicting information'的意思.
    但答案是A---During rough voyages ship passengers in cabins providing a view of the water are less likely to get motion sickness  than are passengers in cabins providing no view.我觉得它反倒削弱了命题.



(2)题是:
    Some good cooks are gourmet cooks who pride themselves on always using extravagantly rich ingredients in elaborate recipes. Some good cooks can be characterized as fast-food cooks. They may used rich ingredients as long as the recipes are easy to follow and take little time. Other good cooks are health food enthusiasts, who are concerned primarily with the nutritional value of food. But even though not all good cooks are big eaters, they all enjoy preparing and serving food.
   问归纳.
   我选B----Everyone who enjoys preparing and serving food is a good cook.我认为此项太绝对了.
但答案为D---There are fewer good cooks who enjoy serving and preparing food than there are good cooks who are big eaters.这项我觉得确实也应选.但怎么排除B了?



(3)题是:
   Baking for winter holidays is a tradition that may have a sound medical basis. In midwinter, when days are short, many people suffer from a specific type of seasonal depression caused by lack of sunlight. Carbohydrates, both sugars and starches, boost the brain's levels of serotonin, a neurotransmitter that improves the mood. In this respect, carbohydrates act on the brain in the same way as some antidepressants. Thus, eating holiday cookies may provide an effective form of self-prescibed medication.
  问归纳.
   我选B---Lack of sunlight lowers the level of serotonin in the brain.
   但答案为D---Sone antidepressants act by changing the brain's level of serotonin.
D我倒是想通了, 但B为什么错了?

[此贴子已经被作者于2003-10-13 17:01:18编辑过]

yunyun

　　二题确实是我打错了，问题是问哪项不能作为归纳，所以我认为Ｄ，Ｂ都不对．
　另外您还没帮我解决第三题呢！

atongmu

some good cooks are gourmet cooks who pride themselves on always using extravagantly rich ingredients in elaborate recipes. some good cooks can be characterized as fast-food cooks. they may used rich ingredients as long as the recipes are easy to follow and take little time. other good cooks are health food enthusiasts, who are concerned primarily with the nutritional value of food. but even though not all good cooks are big eaters, they all enjoy preparing and serving food.
   问归纳.
   我选b----everyone who enjoys preparing and serving food is a good cook.我认为此项太绝对了.
但答案为d---there are fewer good cooks who enjoy serving and preparing food than there are good cooks who are big eaters.这项我觉得确实也应选.但怎么排除b了?

这道题和解题有关的部分就是最后一句。
B是原文的逆命题，未必成立，不能作为conclude答案，只有逆否命题才可以。
不过不知道你是否打字错误，答案d好像反过来了。

[此贴子已经被作者于2003-10-13 17:15:07编辑过]

atongmu

astronauts who experience weithtlessness frequently get motion sickness. the astronauts see their own motion relative to passing objects, but while the astronauts are weightless their inner ears indicate that their bodies are not moving. the astronauts' experience is best explained by the hypothesis that conflicting information received by the brain about the body's motion causes motion sickness.
    问加强.
    我选c----some automobile passengers whose inner ears indicate that they are moving and who have a clear view of the objects they are passing get motion sickness.因为此项很好的体现了原题中的'conflicting information'的意思.
    但答案是a---during rough voyages ship passengers in cabins providing a view of the water are less likely to get motion sickness  than are passengers in cabins providing no view.我觉得它反倒削弱了命题.

这道题目前面2句话是evidence，最后一句conflicting information received by the brain about the body's motion causes motion sickness.是conclusion. 与要support的部分是conclusion，也就是说大脑接受的矛盾信息导致motion sickness.
答案during rough voyages ship passengers in cabins providing a view of the water are less likely to get motion sickness  than are passengers in cabins providing no view中船舱中的乘客内耳感到的是运动，眼睛看到的是静止，所以接受的是矛盾的信息；而看到海水的乘客接受的信息都是运动的，并不矛盾。所以很好的支持了结论。
C是weaken答案，因为司机内耳和眼睛看到的信息是一致的，却有motion sickness.

这道题目逻辑关系不难，但是推理过程的确需要动动脑筋。