7．____the meeting should last two days or three days doesn't matter．（　�。�
A．ThatB．WhetherC．IfD．Where

分析 會議是否持續(xù)兩天還是三天沒關(guān)系．

解答 答案：B 考查主語從句．If 意為"是否"不能引導(dǎo)主語從句，要使用Whether．whether…or…意為"是…還是…； 或者…或者…"．

點評 考查主語從句，首先，弄清楚主語從句的構(gòu)成；其次，根據(jù)句意確定連接詞，連接代詞或連接副詞；最后，根據(jù)句意選擇最合適的選項．

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