题目2A. <img src="https://tihai-oss-cloud.itihey.com/img/f2b2d9fbbf380b89b40b345a794005be.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/85e5e2014bc1e473c68ed7b474724af3.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/a76b7cafff3940e3b92ddbb325aef7ad.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/2e957f3ab9516fc6b2537538ef60ffad.png">