Do you know the stages every inventor must ________ before t

Do you know the stages every inventor must ________ before they can have their invention________ .

A．go through; approve	B．go through; approved
C．get through; approval	D．look through; approved

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wind0206 幼苗

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B

考查动词短语和时态。go through经历，详细检查；完成; get though完成；到达；渡过；用光；(使人)明白；通过；接通(电话); look through仔细查看，浏览，温习;根据句意可知第二空应该使用过去时。结合句意可知B正确。结合句意可知B正确。句意：你知道吗？每一个发明者在取得自己的发明之前必须经历的过程得到认可了。

1年前

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