A、<img src="http://s3.qsxt.info/exams/201906/1ce49de5-fcff-437c-a751-7dc99c34d6a2.png"/>
B、<img src="http://s3.qsxt.info/exams/201906/9d84e5ac-dd52-470c-be41-3c471efda16b.png"/>
C、<img src="http://s3.qsxt.info/exams/201906/322b8d28-d2bc-418f-ad14-674f3aafbddb.png"/>
D、<img src="http://s3.qsxt.info/exams/201906/f8ec9199-e9a3-48a6-ac90-fbe2a20927b2.png"/>
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