下列瀑布属于岩溶型瀑布的是()。
A.贵州黄果树瀑布
B.云南小叠水瀑布
C.庐山三叠泉瀑布
D.黑龙江镜泊湖吊水楼瀑布
参考答案:A
A new educational CD-ROM _____ by Nancy has just come out.[ ]
A. was designed
B. designed
C. designing
D. was designing
眩晕的不良转归和预后可出现下列哪种()
A.中风
B.失明
C.耳聋
D.致残或死亡
E.以上都有