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13.I usually take something to read when I travel by train        I feel bored.(  )
A.in caseB.so thatC.as ifD.even though

分析 当坐火车旅行的时候,以免无聊我通常会带着一些读物.

解答 答案:A.根据I feel bored可知我通常会带着一些读物的目的是以免无聊,所以答案是A in case"以免,以防".其他选项的含义分别是B"以便于",表示目的,肯定;C"好像";D"即使".

点评 考查从属连词.
in case万一.是连词,引导条件状语从句.也就是说in case后面是一个完整的句子.
Take a hat with you in case the sun is very hot.倘若太阳很利害,你就把帽子戴上.
in case of的of是介词,介词后面只能带名词性质的词,比如名词、代词等.意思和in case差不多,万一的意思.
In case of rain they can't go.万一下雨,他们就不能去了.

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