题目2A. <img src="https://tihai-oss-cloud.itihey.com/img/e38b7cefe9e81e0ed625952d5c7fa5c2.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/b5aa2a4b2d52f9930c61095f54e556b3.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/f761d567ec6a262942796b297c6fa962.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/182e135779ba7f2a0a4f289afeb371bd.png">