题干
.
She was educated at Beijing University, _____she went on to have her advanced study abroad.
She was educated at Beijing University, _____she went on to have her advanced study abroad.
A：after that
B：from that
C：from which
D：after which
答案(点此获取答案解析）
D
的定义域为
，值域为
，则在平面直角坐标系内，点
的运动轨迹与两坐标轴围成的图形的面积为
