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19.The forest ______a week ago and the natural fire ______in the heavy rain at last.(  )
A.on fire; put outB.on fire; went out
C.caught fire; went outD.caught fire; put out

分析 这片森林一周前着火了,并且这场自然火灾终于在大雨中熄灭.

解答 答案是C.本题考查动词短语辨析.catch fire着火(动作);on fire着火(状态);put out扑灭,(动作,及物);go out 熄灭(状态,不及物).题干中第一空缺少的是表示动作的谓语动词,所以排除A和B;第二空后面没有宾语,所以用不及物的短语go out;由此判断答案选择C.

点评 关于短语动词的解题,首先要积累识记尽可能多的短语动词及其含义,然后结合语境进行合理的推断.

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