题目8A. <img src="https://tihai-oss-cloud.itihey.com/img/62f3f4cab10f22ba75cd56d650b9936c.gif">B. <img src="https://tihai-oss-cloud.itihey.com/img/c135aee7a915fef38f81452e4250b6d5.gif">C. <img src="https://tihai-oss-cloud.itihey.com/img/ac486c51eb445b04b1d811e09d7ffb67.gif">D. <img src="https://tihai-oss-cloud.itihey.com/img/8593110eab6af79c8f4aa835c38b48b9.gif">