A、<span style="FONT-FAMILY: 宋体; mso-ascii-font-family: ">2</span>
B、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/6ef76110-6663-444c-9c0f-04530e7dbc2c.gif"title="ex_1257558270129_0.gif" alt="ex_1257558270129_0.gif"/>
C、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/af72f7d1-c6f2-4f6a-b61e-02460fa02c79.gif"title="ex_1257558349013_0.gif" alt="ex_1257558349013_0.gif"/>
D、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/5ccf8d7f-8a7b-45f4-bfe4-623c9be282db.gif"title="ex_1257558359307_0.gif" alt="ex_1257558359307_0.gif"/>