The iron and steel industry ______ an important part in our national economy.

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问题 The iron and steel industry ______ an important part in our national economy.

选项 A、plays
B、played
C、play
D、playing

答案A

解析当主语中包含有and时，如果它表示一个单一的概念，谓语动词要用单数动词，否则用复数动词。本题中的iron and steel industry表示的是一个单一的概念，因此谓语动词要用单数。所以本题的正确答案是A。

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专业英语四级

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