题干
I shall never forget the day ________ Liu Xiang won the gold medal, _________ has a great effect on my life.
A：when; which
B：that; which
C：which; that
D：when; that
答案(点此获取答案解析）
A
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（ ）