A、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/595b6a8a-6b24-4e9a-8452-ef694b08c92c.jpg"title="ex_1363918127391_0.jpg" alt="ex_1363918127391_0.jpg"/>
B、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/ef254564-53f2-4f60-a3b0-e850803fb976.jpg"title="ex_1363918166543_0.jpg" alt="ex_1363918166543_0.jpg"/>
C、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/244f995f-2ca9-4cfb-a427-6adaabf343ac.jpg"title="ex_1363918207686_0.jpg" alt="ex_1363918207686_0.jpg"/>
D、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/9c7c815c-7904-41d9-851d-60e027a65c09.jpg"title="ex_1363918252291_0.jpg" alt="ex_1363918252291_0.jpg"/>