题目内容

It’s not easy to change habits，________ with awareness and self­control，it is possible.                                                              (2013·重庆，23)
A．forB．or
C．butD．so
C
解析　 考查连词。句意为：改变习惯不容易，但是如果有了想改变的意识和自控力，(改变习惯)也是可能的。前后句之间为转折关系，故选C项。
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