A:pay
B:be paid
C:pay to
D:be paid to
已知a>b,则下列不等式关系中正确的是( )
He held a glass with care because he was afraid of ____ (break) it.
已知函数y=4x+2-1的定义域为a,ba,b∈Z,值域为0,1,那么满足条件的整数对a,b共有 ( )