下列化学名词或化学用语书写正确的是 [ ]
A．溴笨
B．HC≡CH
C．乙酸乙脂
D．
答案：B
Look ,the apartment that is there belongs to us.
A．built
B．build
C．being built
D．being build
酸雨的pH值小于_________，主要是____________造成的。
