A、<img src="http://s3.qsxt.info/exams/201906/b34ae6b4-3637-4dce-9ddf-4865486a791f.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/d63fd104-58a4-4eaf-aa17-4fa9d813cfd1.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/2b119cad-0a01-456e-881c-bf908ad80a71.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/97a2ea0f-14a5-42f0-ae2c-c7ee45b36cbb.png"/>