选择题:I felt somewhat disappointed and was about to leave, _____ something occurred wh

题目内容:

I felt somewhat disappointed and was about to leave, _____ something occurred which attracted my attention.

A.unless

B.when

C.until

D.while

参考答案:
答案解析:

The answers to the problem,the scientists say,is to build up the immune system,w

The answers to the problem,the scientists say,is to build up the immune system,which not only will g

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He copied other people’s ideas in writing his new book,which is a kind of copywr

He copied other people’s ideas in writing his new book,which is a kind of copywrite( )

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As the population increases and human needs expand, we must take care not to ___

As the population increases and human needs expand, we must take care not to _____ all of our natura

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Ignore that stunning view and keep your eyes on the road, _____admiring beautifu

Ignore that stunning view and keep your eyes on the road, _____admiring beautiful scenery or dramati

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《写生珍禽图》的作者是我国古代画家()。

《写生珍禽图》的作者是我国古代画家()。

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