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The company has been producting this model of machine tool______2008.A、sinceB、a
The company has been producting this model of machine tool______2008.A、sinceB、a
游客
2024-07-26
58
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问题
The company has been producting this model of machine tool______2008.
选项
A、since
B、after
C、for
D、before
答案
A
解析
本题考查现在完成进行时的用法。现在完成进行时常常与since和for连用。Since用来说明某事开始的时间，它后面是一个具体的时间，例如：Monday，April 27th。For用来说明某事持续的时间，它后面是表示一段时间的词或词组，例如：three days，two years。本题中2008年是一个具体的时间，因此选项A为正确选项。
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