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D.if only 解析 考查状语从句。句意:假期时我带上我的驾照,以防万一我想租一辆车。故选A。 答案 A 2.(2013·湖南,23)You must learn to consult your feelings and your reason________you reach any decision. A.although B.before C.because D.unless 解析 考查状语从句。根据句意:在你做任何决定之前,你得学会顾及到你的感觉和你做此决定的原因,可知答案为B(在……之前)。 答案 B 3.(2013·江苏,28)In the global economy,a new drug for cancer,________it is discovered,will create many economic possibilities around the world. A.whatever B.whoever C.wherever D.whichever 解析 考查状语从句。此处考查-ever引导的让步状语从句。通过分析从句,可知句子不缺少主干成分,故排除代词A、B、D三项,故答案选C。 答案 C 4.(2013·江西,28)She says that she'll have to close the shop ________ business improves. A.if B.unless C.after D.when 解析 考查状语从句。根据句意:如果生意没有好转,她就只得关店铺。unless=if...not(如果不),故答案选B。 答案 B 5.(2013·辽宁,24)One can always manage to do more things,no matter________full one's schedule is in life. A.how B.what C.when D.where 解析 考查状语从句。此
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