读东北地区图，（如图1）回答问题．
一天中气温最高和最低的时间分别是（ ）
一水池长和宽均为6m，池内水深10m，池底受水的压力是多少N.
—Did you know China is one of the oldest countries in the world?
—Yes, I did. It’s ______ than the US.
