—It's ____. I'm ____ TV and my brothers are playing ____.
已知fx=x+2+x-4的最小值为n,则二项式x-1xn展开式中x2项的系数为( )
下列各句中没有语病的一项是( )
- There are so many friends at your birthday party. -Yes. And I hope Mr. Li_______ too.
******指出,改革开放是决定当代中国命运的关键一招,也是实现“两个一百年”奋斗目标、实现中华民族伟大复兴的关键一招。我国之所以坚持深化改革、扩大开放,是因为改革开放是( )