题目2A. <img src="https://tihai-oss-cloud.itihey.com/img/115e1f4a14bc8de8272b1b4908130c0a.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/ef2e3acedad04f7d3c8719062bd579c4.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/62b880f76582f54a1397aaa288ec950d.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/d42a12dbf792ddb172a3485157dd379e.png">