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The research scientists often meet with problems______new types of instruments for their solution.
The research scientists often meet with problems______new types of instruments for their solution.
admin
2019-05-10
67
问题
The research scientists often meet with problems______new types of instruments for their solution.
选项
A、require
B、to require
C、required
D、requiring
答案
D
解析
这里考的是非谓语形式做定语的用法,即现在分词做problem的后置定语。如果用require就变成有两个谓语了。这里相当于用了定语从句:Which requires。
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本试题收录于:
英语题库普高专升本分类
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英语
普高专升本
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