{01}(2010·天津模拟)Get out of here at once. _________ not, I’ll phone the police.
A.Since
B.If
C.Why
D.When
解析:考查状语从句的省略。句意:立刻离开这里,如果你不离开的话,我将给警察打电话。故选if, if not 在这里相当于if you don’t get out of here at once。 本题选B。 {02} he can pass the entrance examination is quite uncertain.
A.If
B.What
C.That
D.Whether
解析:考查连词。If、what不能引导名词性从句,that从句不能放于句首,he can pass the entrance examination为名词性从句,故只能使用连词whether,选D。 本题选D。
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