指出白云岩成因的错误说法（）。
A.变质形成的
B.沉积形成的
C.岩浆形成的
参考答案：A
I think ______ at the train station will surprise Aunt Kate.
A．your being
B．you are
C．you were
D．you to be
i5T5.4智能车床两轴进给电机额定功率是多少？
