A、<img src="http://s3.qsxt.info/exams/201906/700adaa1-0ede-444f-acc7-4aceef899338.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/cf6190ce-0b91-4f26-aa66-e3bf66f94acc.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/d8bb24a3-2eaa-4ccf-9acb-1d77fefc7bbf.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/49d7c912-73cd-4d12-b504-44085bd72e98.png"/>