Sasha: It must be healthy to follow a diet high in animal proteins and fats. Human beings undoubtedly evolved to thrive on such

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问题 Sasha: It must be healthy to follow a diet high in animal proteins and fats. Human beings undoubtedly evolved to thrive on such a diet, since our prehistoric ancestors ate large amounts of meat.
Jamal: But our ancestors also exerted themselves intensely in order to obtain this food, whereas most human beings today are much less physically active.
Jamal responds to Sasha by doing which of the following?

选项 A、Refuting her statement about our prehistoric ancestors
B、Bringing forth a piece of information for the purpose of suggesting that she should qualify her main conclusion
C、Citing additional evidence that indirectly supports her conclusion and suggests a way to broaden it
D、Questioning whether her assumption about our prehistoric ancestors permits any conclusions about human evolution
E、Expressing doubts about whether most human beings today are as healthy as our prehistoric ancestors were

答案B

解析 Sasha argues that, because our prehistoric ancestors consumed large amounts of meat, humans must have evolved to thrive on a diet of animal proteins and fats. She concludes from this that it must be good for us to consume such a diet.
Jamal responds by pointing out that our ancestors exerted themselves much more than we do, primarily to catch this food.
This question asks for the best characterization, among the answer choices, of JamaTs response.
A    Jamal implicitly accepts Sasha’s statement that our prehistoric ancestors consumed large amounts of meat. Therefore, Jamal does not refute this statement made by Sasha.
B    Correct. Jamais response indicates that our prehistoric ancestors were far more active than we are. This suggests not that Sasha is incorrect in her statement, but that her conclusion would benefit from this qualification: a diet high in animal protein and fat is healthy when one engages in intense physical activity at a level that is higher than what is normal for modern human beings.
C    Jamais response suggests that Sasha make her conclusion more restrictive rather than more broad.
D    Jamal suggests a qualification of Sasha’s argument based on the behavior of
prehistoric human beings versus modern human beings. This in no way suggests that her assumption about our prehistoric ancestors tells us anything about evolution.
E    Jamal does not question whether most modern human beings are as healthy as our prehistoric ancestors. However, he does question whether a diet high in animal proteins and fats is healthy without adjusting ones level of intense physical activity.
The correct answer is B.
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本试题收录于: GMAT VERBAL题库GMAT分类
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