2. 外语
  3. An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answe

An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answe

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问题 An introductory sentence for a brief summary of the passage is provided below. Complete the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sentences do not belong in the summary because they express ideas that are not presented in the passage or are minor ideas in the passage. This question is worth 2 points.
    The popular use of right hand was and is believed to relate to the physical differences between the two sides of the brain, and there is also some historical evidence.
Answer Choices
A. Scientists believe that subtle physical differences between the two sides of the brain are demonstrated by physical differences between the right and left sides of the interior of the skull.
B. Scratches on fossil human teeth also provide information for the relation of the popular use of right hand to the physical differences between the two sides of the brain.
C. The human figures represented in the paintings appear to be less carefully shaped than those of animals.
D. Those humans have been predominantly right-handed for more than 5000 years.
E. Cro-Magnon cave paintings present outlines of human hands in which one hand is placed against the cave wall while the other is applying paint.
F. The evidence found in anthropological studies shows that the record of handedness in early human ancestors can be traced back to at least 1.4 million years ago.
选项
答案A. Scientists believe that subtle physical differences between the two sides of the brain are demonstrated by physical differences between the right and left sides of the interior of the skull. B. Scratches on fossil human teeth also provide information for the relation of the popular use of right hand to the physical differences between the two sides of the brain. E. Cro-Magnon cave paintings present outlines of human hands in which one hand is placed against the cave wall while the other is applying paint.
解析     本题是篇章总结题，考查考生理解全篇中心思想和相关重要信息的能力，考生通过区分主要信息和次要信息以及文章中没有提及的信息达到总结全篇的目的。题目给出的句子说明人类普遍使用右手可能与两个半脑的生理区别有关，而且可以找到古代人类的证据。选项A、B、E表明在研究古代人类的脑形态学、牙齿的擦痕以及古代工艺品的制作过程中都有相应的证据，而选项C、D、F均为干扰项，选项C文章中根本没提到，选项D、F只是文中关于研究资料的年代细节，不具有对研究意义的概括性。
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