题目内容

20．Many businesses started up by college students have ________thanks to the comfortable climate for business creation．（　　）
A．fallen offB．taken offC．turned offD．left off

分析 句意：多亏了适合创业的舒适气候（舒适的创业氛围），很多由大学生创办的企业迅速发展．

解答 答案B．"fall off"减少，下降；"take off"起飞，突然成功，开始迅速发展；"turn off"关掉；"leave off"停止，中断．根据句意，多亏了适合创业的舒适气候，很多由大学生创办的企业"迅速发展"．故选B．

点评 本题考查的是动词短语，要掌握短语的意思并结合具体的语境选择出正确选项．

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