若|a|=3,|b|=2,则a+b等于( )
A.±5或±1
B.5或1
C.5
D.1
∵|a|=3,|b|=2,
∴a=±3,b=±2,
则a+b=±5或±1.
故选A
现代主义设计风格成熟于()。
To order tickets for the 2016 Riode Janeiro Olympic Games, just call 00982012. It _______ be simpler.
A.must
B.could
C.mustn’t
D.couldn’t