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After several years of observation,the research group ______

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After several years of observation,the research group ______ the conclusion that language acquisition is faster when students ______ to the situation where it is spoken.A.has come to; expose B.have arrived at; are exposed C.has concluded; are exposed D.have reached; expose
这句话怎么翻译
为什么选 B
After several years of observation,the research group ______
Come to the concludion =conclude
一,这是固定用法.如果用conclude,因为后面还有conclusion,就重复了.
二,expose 是使动的,使某人暴露,向某人展示,所以应该用被动的.
再问: 为啥用arrive at
再答: arrive at the conclusion 和 come to the conclusion 是一样的都可以,都是得出结论的意思。也可以用一个词 conclude 来表达