Notallthepatentshavebeenrecogn

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更新 2022-09-03
科目英语
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Not all the patents________ have been recognized.

A．to be examined	B．being examined
C．examined	D．having been examined

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The government is aiming to reduce the unemployment, but it’s quite _______ to have a job at all these days.

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Most experts agree that human activities such as the clearing of large areas of forests, and farming on a large scale _________ the problem of global warming.

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We spent hours driving and another few hours waiting, only _________ that the plane would be delayed until midnight.

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