题干
— Do you often play _____ piano?
— Yes. I want to be _____ musician like Lang Lang.
A：the; a
B：a; the
C：the; an
答案(点此获取答案解析）
A
— Do you often play _____ piano?
— Yes. I want to be _____ musician like Lang Lang.
A：the; a
B：a; the
C：the; an
的图象上的每个点的纵坐标不变，横坐标缩小为原来的
，然后沿
个单位，再沿
轴正方向平移
个单位，得到（ ）
