题目内容
It remains to be seen _______the newly formed committee’s policy can be put into practice.
| A．that | B．which | C．what | D．whether |
D
解析试题分析：考查主语从句。句意：是否新形成的委员会的政策能付诸实施还有待证实。题干中it作形式主语，真正主语为横线后的主语从句。判断主语从句中不缺少主干成分，因此排除代词BC两项；“有待被观察”的事情应是不确定的事而不是表陈述，即排除表陈述的that应用whether表“是否”。选D。
考点：考查主语从句
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| A．whether | B．how | C．what | D．where |
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| A．what | B．where | C．when | D．why |
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| A．where | B．how | C．what | D．when |
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| A．they | B． that | C． who | D．which |
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| A．until | B．or | C．but | D．and |
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| A．where | B．because | C．that | D．in which |
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| A．which | B．as | C．where | D．that |