A、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/739b02a1-b063-4198-a004-36688dce71ac.jpg"title="1374109041750.jpg" alt="1374109041750.jpg"/>
B、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/0121bf42-98d2-49b6-9b66-4f037237b204.jpg"title="1374109051234.jpg" alt="1374109051234.jpg"/>
C、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/7f8f662c-1ac0-4b3c-87a4-d7a9c7e714ce.jpg"title="1374109071859.jpg" alt="1374109071859.jpg"/>
D、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/96b43211-0eab-4f72-a2ff-3eaa61c135df.jpg"title="1374109085312.jpg" alt="1374109085312.jpg"/>