题目

The ______ look suggested that there must be something ______ around her. A. scaring; scared       B. scared; scaring     C. scaring ; scaring     D. scared; scared 答案：B（2005?铜山县）已知y=kx（x，y均不为0），当k一定时，x和y（　　）A．成正比例B．成反比例C．不成比例