A、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/785f79f3-0658-4d0f-b91f-b38b32251b66.jpg"title="1373952381500.jpg" alt="1373952381500.jpg"/>

B、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/62d310df-cdff-43a8-9a31-0b362f24ec6f.jpg"title="1373952398421.jpg" alt="1373952398421.jpg"/>

C、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/c08862f5-67ec-480a-9542-9e3d7895fe87.jpg"title="1373952412375.jpg" alt="1373952412375.jpg"/>

D、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/41244c25-b58d-401c-86c3-c99cb2ba3a99.jpg"title="1373952436265.jpg" alt="1373952436265.jpg"/>