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In the experiment we kept _____ watchful eye on ______ developments and recorded every detail.
A.a; /B./; theC.a; theD./;/
C

试题分析:考查冠词。keep an eye on sth.关注…是固定短语;我们关注的是实验的发展,因此在developments前加定冠词the.表示特指。句意:在这个实验里我们密切注意实验的发展记录每一个细节。故C正确。
点评:冠词的考查集中在the表示特指;a/an表示泛指。另外要注意冠词的一些固定搭配中冠词的使用。还要注意抽象名词具体化的用法,除了honor还有success,failure,surprise,pleasure等名词也可以表示抽象名词具体化。
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