控制人口数量，提高人口质量和全民健康水平，迫切需要什么来提供强有力支撑？
参考答案：
需要科技来提供强有力支撑.
词形转换。
1. The dog stopped _ (bark) when it saw his owner.
2. It is very strange that baby has four (finger) in his left hand.
3. Our teacher said he wouldn't forgive these _ _ (honest) boys for ever.
4. The fish you cooked just now (smell) terrible.
5. We often see a lot of (ant) going up and down in the trees.
一块圆形花岗岩板，半径是2分米，100块这样的花岗岩板的面积一共是多少平方米？
