2. 外语
  3. The passage gives a description of several methods of testing mental ability. Scientists now understand why people’s mental fac

The passage gives a description of several methods of testing mental ability. Scientists now understand why people’s mental fac

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问题 The passage gives a description of several methods of testing mental ability.
Scientists now understand why people’s mental faculties decline at different rates.
选项 A、Y
B、N
C、NG
答案B
解析 本题是讲“科学家现在明白人的智力能力以不同速度下降的原因”，其中now understand为关键词，定位在文章的第十一段，首句讲Just as people go bald Or grey at different rates，so the same is true for their mental faculties．Why this should be the case for memory and other mental functions is not yet clear。now understand不是is not yet clear，因此题干的说法不符原文。
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大学英语四级

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