题目1A. <img src="https://tihai-oss-cloud.itihey.com/img/9a6161cecfdd4e328ac90d65dbb5487e.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/f4d504cb32da9c0ee90c1f0ca5375e22.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/f4174d38d695e22fa2513e742e1d0725.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/91237d5b38e7e76215e959d213693926.png">