15．________it is a good thing I did not get the post I had applied for，though I must admit that I was disappointed at the time.

　　A．By the way      B．In a way

　　C．In the way      D．In no way

　　答案　B

　　解析　in a way在某种程度上；in no way决不；by the way顺便提一下；in the way碍事。句意为：我没有得到我申请的工作在某种程度上说是件好事，尽管我承认当时我很失望。

　　16．Never put the medicine________the reach of your little child in case he takes it by mistake.

　　A．beyond       B．within

　　C．across       D．from

　　答案　B

　　解析　句意为：千万不要把药放在你的小孩够得着的地方，以防他错吃了它。within在……之内。

　　17．-When did it begin to snow?

　　-It started________the night.

　　A．during    B．by    C．from   D．at

　　答案　A

　　解析　句意为：--什么时候开始下雪的？--在夜间开始的。"在……期间"应用during。

　　18．Those overseas students volunteer 10 hours each week in Paris ________ free food and accommodation.

　　A．in search of      B．in contact with

　　C．in case of      D．in exchange for

　　答案　D

　　解析　in exchange for与……交换；in search of寻找；in contact with与……接触；in case of在……情形下。句意为：为了换取免费的食宿，那些在巴黎的留学生们每周义务劳动10个小时。故正确答案为D项。