题干
As far as I am concerned, our unbeatable school team _________ the important game.
A：is worthy of being wo
B：is worth its while to be winning
C：deserves to wi
D：promises to lose
答案(点此获取答案解析）
C
展开式中各项二项式系数之和为
，
展开式中各项系数之和为
，则
=" " （ ）
”表示一种运算，即
，若
，则
=（ ）
