A、<img src="http://s3.qsxt.info/exams/201906/5843a23f-c25c-4e88-9298-604af7df7b3e.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/3d37dc31-cd2f-4d08-b297-aad54b08532f.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/cbdf72d2-ff8f-4a00-b77a-751029d09ecc.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/4219e269-a56b-4b7f-ac04-96a8bc06d5b2.png"/>