A、<img src="http://s3.qsxt.info/exams/201906/b1684742-8e21-4442-b4ac-9902b0e22a30.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/b7c4d951-deed-459d-a17a-8eccf3f34fa7.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/257afea2-7728-4404-aff1-5f6b0275c4b2.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/28a23fac-8edd-4e66-805c-96851de72d14.png"/>