* * 臣魏忠贤是我国哪个朝代的宦官?
参考答案:
* * 臣魏忠贤是明朝的宦官
I want to watch the basketball match. Would you please __ the TV? [ ]
A. turn on
B. turn off
C. turn down
D. turn up
S表示R与S的 (24) 。若R和S的关系分别如图10-30所示,则R和S自然连接的结果是 (25) 。