(2013·銀川高三二模)It remains to be seen ________ this plan is practical enough to keep the project going.

A．whether B．how

C．where D．when

 

A

【解析】選A　考查主語從句。句意：這個計劃是否足夠?qū)嵱茫允惯@個項目繼續(xù)下去還有待觀察。it是形式主語，真正的主語是whether引導(dǎo)的從句。whether“是否”，符合句意。

 

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