A、<img src="http://img.wangxiao.cn/examfiles/imgcache/attached/image/20140609/20140609235424_3873.jpg" height="13" width="57" />

B、<img src="http://img.wangxiao.cn/examfiles/imgcache/attached/image/20140609/20140609235433_1686.jpg" height="13" width="59" />

C、<img src="http://img.wangxiao.cn/examfiles/imgcache/attached/image/20140609/20140609235439_4342.jpg" height="13" width="59" />

D、<img src="http://img.wangxiao.cn/examfiles/imgcache/attached/image/20140609/20140609235445_4498.jpg" height="13" width="27" />