题目3A. <img src="https://tihai-oss-cloud.itihey.com/img/bfdcf5210b787b11e21c7f55d7843cd9.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/a4b8a0abf102cc5acf3dd5ac83b08144.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/9271167eda8bb42353c6332462d82991.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/5dd8a7092f4fb9ff6db653f8f594db23.png">