题目2A. <img src="https://tihai-oss-cloud.itihey.com/img/023f8b6cf05bd84f33a9623c20acf85b.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/e4c8991ff82f92f3988885ead8a113de.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/ca930c8d4e3b99b71454034fa02e17f6.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/3e1fa108626ed42842e4425e5918d578.png">