Don't turn off the computer before closing all the programs. you'll have problems．( )A．butB．andC．soD．or 题目和参考答案——青夏教育精英家教网——

题目内容

10．Don't turn off the computer before closing all the programs，____you'll have problems．（　　）

A．

but

B．

and

C．

so

D．

or

分析不要在结束所有程序前关闭电脑，否则你将遇到问题．

解答答案D
A but 但是，表转折； B and 表顺成关系，接着，然后； Cso 因此，表因果关系；D or 否则，要不然；
综合全句，本题实际是个固定句型：祈使句+and/or+句子（句中含有will/could），and表顺成关系，or表示警告或提醒，意思是否则，要不然，结合分析，故选D．

点评考查固定句型时，需要学生平时的积累，要能够看出固定句型，更要懂得其运用的方法．

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