题目1单选题
<img src="https://tihai-oss-cloud.itihey.com/img/4ec8d1b4c9cd0921c46c5f487f0543a0.webp">A. <img src="https://tihai-oss-cloud.itihey.com/img/352180ef64068ff9ef920178b5221940.webp">B. <img src="https://tihai-oss-cloud.itihey.com/img/6905f0ae094642c4ebaa739a3d6311a2.webp">C. 既有水平渐近线y=-2,也有铅直渐近线x=0D. 无水平、铅直渐近线