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Use your head, _______you’ll work out the problem.
A.orB.soC.andD.for
C

试题分析:考查固定句式。本题中含有特殊句式:祈使句+连词+陈述句=If引导的条件句+主句。这个句型进一步转换成:名词短语+连词+陈述句。如果原句中的连词是and,那么可以转换成一个肯定的条件句;如果原句中的连词是or,可以转换成一个否定的祈使句。句意:用你的头脑,你就会算出那道题。本句可以转换成If you use your head, you will work out the problem.故使用and。故C正确。
点评:本题的固定句式是高考中的重点内容。:祈使句+连词+陈述句=If引导的条件句+主句。这个句型进一步转换成:名词短语+连词+陈述句。本题要注意转换成条件句的肯定和否定形式。
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