题目内容
It is nearly half a century________ the first computer was invented.
A. since B. when C. that D. until
A
It is …since 句型意思是“自从…已经多久了”。
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题目内容
It is nearly half a century________ the first computer was invented.
A. since B. when C. that D. until
A
It is …since 句型意思是“自从…已经多久了”。
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