A:Much better than yours.
B:Yes. of course it’s very good.
C:It’s very kind of you to say so.
D:No, you are totally wrong~
如果a=2+3,b=12-3那么( )
- Who is she?
-She's my sister.
一种大米的质量标识为“(50±0.5)千克”,则下列各袋大米中质量不合格的是( )