2. 外语
  3. ______ with enough instruments necessary for the experiment, these scientists are expecting to finish it ahead of time.

______ with enough instruments necessary for the experiment, these scientists are expecting to finish it ahead of time.

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问题 ______ with enough instruments necessary for the experiment, these scientists are expecting to finish it ahead of time.
选项 A、To be supplied
B、To supply
C、Supplying
D、Supplied
答案D
解析 要根据分词的逻辑主语来判断分词用主动形式还是被动形式，还要看该动词是不是及物动词。如果是及物动词，后面带有宾语，该动词就不会再用被动形式了，如没有宾语，应考虑使用被动形式。本句是使用被动形式，应该是过去分词。而动词不定式表示目的，句子的意思就变成了好像是为了得到实验必需的仪器，科学家在指望提前完成实验。
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