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参考答案及解析

1.A considering "考虑到",而 considered "被认为",根据全句含义,句中主语they和considering是主动关系。

2.C

3.A

4.D lack 作名词,后加of短语。如用A项,lacking是及物动词的动名词,后面不用介词of或作不及物动词,后面加介词in…。

5.D put/ place/ lay emphasis on 是固定搭配,表示"强调,注重。"

6.D the results of which 等于whose results,是非限制性定语从句。

7.A

8.C 该题空格处缺少的是连词,且在从句中作主语,所以排除A,D; that在名词性从句中只起连接作用。

9.B

10.D on which to base his arguments in favor of the new theory = The professor will base his arguments in favor of the new theory on sufficient grounds.

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