A、<img src="http://img.wangxiao.cn/examfiles/imgcache/attached/image/20130111/20130111145134183418.jpg" alt="" border="0" />
B、<img src="http://img.wangxiao.cn/examfiles/imgcache/attached/image/20130111/20130111145149834983.jpg" alt="" border="0" />
C、<img src="http://img.wangxiao.cn/examfiles/imgcache/attached/image/20130111/20130111145113961396.jpg" alt="" border="0" />
D、<img src="http://img.wangxiao.cn/examfiles/imgcache/attached/image/20130111/20130111145178287828.jpg" alt="" border="0" />
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