A、<img src="http://s3.qsxt.info/exams/201906/6802df7f-1448-4277-899d-6ee47d3e5d50.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/15fa2dfe-5e17-4e48-be1f-e39293b8f82b.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/ea704b63-80cc-44ac-86e6-d87be8cccc8c.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/4f081993-3411-4a5b-a8a9-367e4a5a8e62.png"/>