题干
—Why did they the houses?
—Because they will build a park there．
—Because they will build a park there．
A：take down
B：write down
C：cut down
D：turn down
答案(点此获取答案解析）
A
cC(g) +dD(g),C物质的质量分数（C%）与温度、压强的关系如图所示，下列判断正确的是 （ ）
