题目1A. <img src="https://tihai-oss-cloud.itihey.com/img/790df4293b1d8c0d64a45a0e0efaa44b.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/58f8ca850baa2fbb547702c6ff3dd984.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/906942383f5782ca56214b871fe20c11.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/5b33cce403a8a02517112cac422f7075.png">