设a、b、m为整数(m>0),若a和b被m除得的余数相同,则称a和b对模m同余,记为a≡b(modm).已知a=2+C+C•2+C•22+…+C•219,b≡a(mon10),则b的值可以是( )
He can pick up the table with one hand. strong boy he is!( )
A.HowB.WhatC.What a
It's said that Tina will go to Canada by herself.
Yes. of her parents will go with her.( )
A.BothB.NeitherC.Either
If buildings fall down with people inside,the snake robots can help ____people under the buildings.( )
A.take upB.look forC.cut up
Have you ever to Caozhou Peony Garden? Yes,I there last year.( )
A.been;wentB.gone;wentC.been; gone
China is almost as as the US,and it is the country in Asia.( )
A.big;biggerB.big;biggest
C.bigger;biggest