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题目
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.I won’t call you, __________ something unexpected happens.
A.unlessB.whether
C.becauseD.while

答案
A。
解析
unless的意思是“除非”,又如:Don’t call me unless you need help. 除非你需要帮助否则别打电话找我。Unless you change your mind, I won’t be able to help you. 除非你改变你的想法,否则我不能帮助你。
核心考点
试题【.I won’t call you, __________ something unexpected happens. A.unlessB.whetherC.b】;主要考察你对句法等知识点的理解。[详细]
举一反三
.__________ he had not hurt his leg, John would have won the race.
A.IfB.Since
C.ThoughD.When

题型:不详难度:| 查看答案
. It is difficult for us to learn a lesson in life __________ we’ve actually had that lesson.
A.untilB.after
C.sinceD.when

题型:不详难度:| 查看答案
.Many of them turned a deaf ear to his advice, __________ they knew it to be valuable.
A.as ifB.now that
C.even thoughD.so that

题型:不详难度:| 查看答案
.—Do you have a minute? I’ve got something to tell you.
—Ok, _________ you make it short.
A.now thatB.if only
C.so long asD.every time

题型:不详难度:| 查看答案
.—Did you return Fred’s call?
—I didn’t need to _________ I’ll see him tomorrow.
A.thoughB.unless
C.whenD.because

题型:不详难度:| 查看答案
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