A、<img src="http://s3.qsxt.info/exams/201906/7aa740ae-99b5-4152-be9d-5eee44f244d6.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/fe3ee2a1-9806-4162-84fb-c9c6a37458c7.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/fc5cf72b-41e3-4b5c-8ff0-6340367cba8b.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/1dc6617c-8c1b-4b63-a924-0e5793893c15.png"/>