痛无定处，忽彼忽此，走注甚速，其疼痛的成因为（）
A.热
B.寒
C.风
D.气
E.瘀血
参考答案：C
用 there be 或 have的适当形式 填空。
1. This desk _________ four legs.
2. __________ some books on the desk.
3. Everyone ___________ a dictionary in my class.
4. ___________ (没有) knives in the room.
5. I ___________ a new sweater.
6. ___________ some flowers and a desk in the room.
7. ___________ nothing in the bag.
8. They ____________ something to eat.
黄壤
