我国的特殊天气主要有 , ,台风和沙尘暴等。
寒潮 梅雨
题目分析:
我国的特殊天气主要有台风、沙尘暴、寒潮、梅雨等。
—I'd like to go hunting with you, but I have a meeting________.
—If you don't go, ________.[ ]
A. to attend; so do I
B. attending; so will I
C. attend; neither will I
D. to attend; nor will I
OA⊥MN,OB⊥MN,所以OA,OB在一条直线上,理由是 ( ).