题目1A. <img src="https://tihai-oss-cloud.itihey.com/img/db026afb14812975558e97de0245b85b.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/bf280babd27fb4f006a1dca89a953b48.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/b39d10062983be3714da8f65fc13940a.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/064f0a9f97c581261ce773c17d1b71c7.png">