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8.Milk quickly goes bad in summer ____ it is in a fridge.(  )
A.ifB.becauseC.unlessD.when

分析 除非将牛奶放在冰箱里,否则牛奶会在夏天迅速变质.

解答 答案:C.根据Milk quickly goes bad in summer和it is in a fridge的关系可知,牛奶会迅速变质,条件是不放在冰箱里;也就是说,除非将牛奶放在冰箱里,否则牛奶会在夏天迅速变质.unless表示"除非"的意思,相当于if…not"如果…不".本句意思也可以翻译成:牛奶如果不放在冰箱里,就会迅速变质.故选C.

点评 做本题时,应注意前后句的关系,只有理清他们的关系,了解各个选项的意思,方能选出正确的答案.

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