458×89=____
5106÷74=____
选择正确的选项补全对话。
A. welcome
B. water
C. Thank
D. like
E. Here
Tom: I'm thirsty. Can I have some ____?
Amy: Sure. ____ you are.
Tom: ____ you. I'd ____ an egg, please.
Amy: Here you are.
Tom: Thanks.
Amy: You are ____.
我们与父母进行沟通的过程,其实是 ( )
在二氯化铂的HCl溶液中,通入乙烯气体,再加入KCl可得KPt(C2H4)Cl3•H2O(蔡氏盐),相关表示正确的是( )