A、<img src="http://s3.qsxt.info/exams/201906/044311bd-6979-4998-83d6-c7a92d6195f8.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/2622e737-443b-4889-af98-4c6436b5f071.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/3c359a65-9381-4744-9350-1233e04709df.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/47536824-fb02-491b-b299-d813850d9c1a.png"/>