A、<img src="http://s3.qsxt.info/exams/201906/48f1e9b8-2f13-4179-9c29-96306adda49c.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/9b3efdf5-b341-47ee-ba69-8b654684b300.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/c1825409-4417-4f61-bc89-78af189050cc.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/255452da-83f2-45e3-8d63-49d7ffd522a8.png"/>
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