题目1A. <img src="https://tihai-oss-cloud.itihey.com/img/312fc69bb1dcc599c921ac30aa9ec990.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/8bffec186129d1d65485ff31ceda0787.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/ff388086797858d55082577cae9b933b.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/fed8f53b482d260e2cbbeb6d036049b7.png">