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外语
They did the experiment______ their chemistry teacher had instructed.
They did the experiment______ their chemistry teacher had instructed.
admin
2016-01-26
64
问题
They did the experiment______ their chemistry teacher had instructed.
选项
A、as
B、though
C、until
D、when
答案
A
解析
连词的含义与用法。as作为连词可以引导方式状语从句,表示“按照,依照;正如;像”。until和when引导时间状语从句,though引导让步状语从句,但它们引导的从句都应该是完整句,而本句中的instruct是及物动词,必须带宾语才能构成完整句,因此B、C和D项不正确。
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专业英语四级
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