A、<img src="http://s3.qsxt.info/exams/201906/44a6e1c0-dadb-4611-81dd-bb96650b0157.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/ef4e619c-64ea-477d-b0a5-3815d6b3db9d.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/e5eb8843-1e3e-409f-8936-c15b46f20eb6.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/f715ebed-6acc-4a54-8e4b-952fe934dd36.png"/>
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