CET英语
问:The survival of civilization as we know it is ____ threat .
A) within B)under C)towards D)upon
解:句意为:"当今人类文明的生存正在受到威胁。"在4个选项中,只有B) under
表示"在…..情况下"或"遭到"。
Is under threat 相当于 is experiencing threat .故B)under 为解。如:
Did he do it voluntarily or under compulsion ? 他是自愿做的,还是强迫做的?
The road was under repair so we had to go round .这条道路正在修理,因此我们只得绕道而行。
The fire was soon brought under control .火势很快得到控制。
选项D)不能与threat 搭配表"遭遇"之意。Upon 可以表示"在….后立即"。如:
Upon conclusion of these studies,the patient was told that she had a severe problem.
在这些研究一有结论之后,病人就被告知有严重的博Towards 意为"向….对….."如:
The talks made little evident progress towards agreement .谈判几乎没有向达成协议的方向取得进展。
问: By the end of this month , we surely ____ a satisfactory solution to the problem .
A) have found B)will be finding C) will have found D)are finding
解:本题考核谓语动词时态的用法。句中时间状语 by the end of this month (到本月底)表示未来的某一时刻,后面说"肯定能找到一个满意的解决问题的办法",即句子谓语动词的动作 find 要在该时刻前完成。因此需用将来完成时态。故答案为 C)
will have found .如:
when we get there they’ll probably have left 我们到那里时他们可能已经走了。
He will have finished his novel by next Friday .他将在下星期五前写好他的小说。
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