A、<img src="http://s3.qsxt.info/exams/201906/8507b165-48ad-4efc-a4ee-ef4e01f383f4.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/1a37af8e-43de-4a18-a3f9-b629ad5d099c.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/8e5f6397-cbbb-4ea5-8302-d64dcc9903e5.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/fbc0d1bf-ecdd-48f1-a8a7-b28baf112136.png"/>
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