- Would you like to attend the farewell party next week, Mr. Huang?
- Sure, I'd love to. I have no reason to _______ your invitation,
A:turn down
B:turn off
C:turn up
D:turn on
下列有关锌锰干电池的说法中正确的是( )
如图为物质的分类关系,①与②是并列关系,③包含在②中,若②是纯净物,则③不可能是( )