Milk quickly goes bad in summer it is in a fridge (冰箱). A．ifB．becauseC．un
题型：不详难度：来源：
Milk quickly goes bad in summer it is in a fridge (冰箱). | A．if | B．because | C．unless | D．When |
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答案
| C |
解析
试题分析：句意：牛奶除非放在冰箱里，否则在夏天很快就会变质。Unless表示条件，即如果不具备这个条件就会发生某种状况；if表示“如果”；because意为“原因”，when意为“何时，当……的时候”；故选C。 |
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