Use your head, _______you’ll work out the problem.
A．orB．soC．a(chǎn)ndD．for
C

試題分析：考查固定句式。本題中含有特殊句式：祈使句+連詞+陳述句=If引導(dǎo)的條件句+主句。這個(gè)句型進(jìn)一步轉(zhuǎn)換成：名詞短語+連詞+陳述句。如果原句中的連詞是and,那么可以轉(zhuǎn)換成一個(gè)肯定的條件句；如果原句中的連詞是or，可以轉(zhuǎn)換成一個(gè)否定的祈使句。句意：用你的頭腦，你就會(huì)算出那道題。本句可以轉(zhuǎn)換成If you use your head, you will work out the problem.故使用and。故C正確。
點(diǎn)評(píng)：本題的固定句式是高考中的重點(diǎn)內(nèi)容。：祈使句+連詞+陳述句=If引導(dǎo)的條件句+主句。這個(gè)句型進(jìn)一步轉(zhuǎn)換成：名詞短語+連詞+陳述句。本題要注意轉(zhuǎn)換成條件句的肯定和否定形式。
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