Windows窗口一般由标题栏、菜单栏、控制按钮等部分组成。为了移动窗口，则要用鼠标拖动【 】。
参考答案：标题栏
—Are you planning to take American History by Mr Johnson next semester?
—________ I might not have enough time.
A．It depends.
B．So what?
C．Sounds great!
D．Why not?
请简述《公民凯恩》在世界电影史上的地位和贡献？
