A：“国际工人协会”成立
B：欧州三大工人运动
C：《共产党宣言》的发表
D：巴黎公社革命的爆发
____Thanks, Mum.
____What about some juice?
____Here you are.
____I'm thirsty (口渴的), Mum.
____No, I'd like a glass of milk.
I think our school should allow us our own uniforms.
9.87÷0.14=____÷14
0.987÷0.14=____÷14
81的平方根是（ ）
