【題目】Lots of old people exercise every morning________ bad weather stops them.

A.unlessB.ifC.until

【答案】A

【解析】

句意:許多人每天早晨鍛煉,除非壞天氣阻止他們。

考查從屬連詞。unless除非,引導條件狀語從句;if如果,引導條件狀語從句;until直到,引導時間狀語從句。結(jié)合句意可知,此空是"除非",應(yīng)填unless,故選A。

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