A:金属
B:非金属
C:可溶性碱
D:可溶性盐
If I=1 Then
X=X+1
Else
X=X*2
End If
它的基本结构属于( ).
— Does he have a soccer ball?
— _______. But he has two ping- pong bats.
世界上最深的淡水湖是( )