2. 外语
  3. This passage is most probably taken from a ______. Which of the following is TRUE according to the passage?

This passage is most probably taken from a ______. Which of the following is TRUE according to the passage?

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问题 This passage is most probably taken from a ______.
Which of the following is TRUE according to the passage?
选项 A、Birds evolved from reptiles.
B、It is known to all that flight developed when a ground-living form began to flap its wings to increase its running speed.
C、It is known to all that flight developed when a tree-climbing form used imperfect wings to aid it in leaping from tree limb to tree limb.
D、The evolution from reptile to the bird concluded about 75 thousand years ago.
答案A
解析 本题为判断题，可用排除法。选项A与第二段第一句"Birds evolved from reptiles"一致，因此正确；第二段第三句为一复杂长难句，其主干为"It is still unknown whether…when…or when…"，此句中whether和or的内容均为unknown，而B、C两项是known，因此排除；选项D中量词单位thousand与原文的million不符，属偷换概念。
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