No one has yet succeeded in explaining the ___ of how life began.A．causeB．proble
题型：不详难度：来源：
No one has yet succeeded in explaining the ___ of how life began.| A．cause | B．problem | C．reason | D．puzzle |
|
答案
| A |
解析
| 词义辨析。Cause原因；目标； problem 问题，难题；reason 原因，理由，动机； puzzle 难题，迷惑。句意：还没有人在解释生命是如何起源的这个原因上取得成功。 reason着重指解释或说明某事发生的理由或原因；cause着重指产生或造成某事发生的原因。结合语境可知选A，为最佳答案。 |
举一反三
.What a _______ that dress makes! She looks very pretty now.| A．transplant | B．transportation | C．translation | D．transformation |
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A(n) _______ will be paid to anyone who brings back the money Mr. Brown lost, according to the advertisement.| A．award | B．prize | C．reward | D．profit |
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The world has twice as much shipbuilding _______ as it needed in the 1980s.| A．capacity | B．potential | C．ability | D．possibility |
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The next morning Mr. Smithson spoke his mind to his wife in a very straightforward _______.| A．route | B．method | C．manner | D．pattern |
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. —Why are you so frightened?
—I saw two dark _______ enter the building.| A．shades | B．appearances | C．shadows | D．figures |
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