关于巨大胎儿对母体的影响,不正确的是()
A.软产道损伤
B.高张性子宫收缩乏力
C.子宫破裂
D.子宫脱垂
E.产后出血
参考答案:B
用所给词的适当形式填空。
1. Australia has beautiful ___________ (beach).
2. I eat supper with my ___________ (family).
3. Canada's flag has a ___________ (leaf).
4. This is ___________ (Australia) flag.
5. What colour are ___________ (it) stars?
6. ___________ (kangaroo) live in Australia.
硫在空气中燃烧的实验现象有:___________、___________、__________;
硫在氧气中燃烧的实验现象有:__________ 、___________、___________;
酸雨的形成过程可用化学方程式表示为:___________、______________ 、___________或_______________。