A、<img src="http://s3.qsxt.info/exams/201906/21130e44-905d-4629-adc1-5a51ddf8bb3e.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/fe56c777-2581-442d-8a6d-6a72708169cc.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/9ccc0534-d418-4b00-93c7-87aa12abfbd6.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/ced60507-7cf0-4348-8490-031337ae30a3.png"/>
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