题目

We are all ________ to see Paul at the party. We haven’t heard from him for three years. A. surprising    B. surprised    C. boring        D. bored 答案：B设函数f（x）=sinωx（ω＞0），将f（x）的图象向左平移 个单位从长度后，所得图象与原函数的图象重合，则ω的最小值为（ ）A.B.3C.6D.9