题目

交际配对1）What was he like when he was in primary school?2）What size do you take?3）Could you tell me the way to the museum?4）Did he stay in Missouri?5）Was he born in Germany?A. Sure. Go along this road .B. No, he wasn't.C. Yes, he did. D. He was quite different.E. Size S. 答案：【1】D【2】E【3】A【4】C【5】B利用“五点法”画出函数在长度为一个周期的闭区间的简图， 并说明该函数图象可由y=sinx（xR）的图象经过怎样平移和伸缩变换得到的。