A number of theories have been proposed to explain the situation.A tested B ...

作者: tihaiku 人气: - 评论: 0
问题 A number of theories have been proposed to explain the situation.
选项 A tested B used C suggested D announced
答案 C
解析 propose和 suggest是同义词,意思都是 “ 建议、提议、提出” ,用法略有不同,两者后面都可以跟动词的-ing形式,但是propose后面可以用动词不定式, suggest则不可以。可以说 we propose to have a meeting,但是不可以说 we suggest to have a meeting。 test 的意思是“测试、检验”, announce的意思是“宣布、公布”。

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