—What a nice car! Is it yours?
—Yes! I _____ it for three months.

A. Why do you like spring best?  

B. What will you do for her birthday?    

C. Which season do  do you like best? 

  A: Hello. Can l ask you some questions，please?

  B: Sure.

  A: ____

  B: I like spring best.

  A:____

  B: Because my mother's birthday is in spring.

  A: ____

  B: I'll make a card for her.

在半径为r的球内有一内接正三棱锥，它的底面三个顶点恰好都在同一个大圆上，一个动点从三棱锥的一个顶点出发沿球面运动，经过其余三点后返回，则经过的最短路程是（　　）

“回归梦”“入世梦”“奥运梦”“飞天梦”“世博梦”“深潜梦”“探月梦”……新中国成立以来中华民族的一个个梦想都成为现实。这些成就共同证明（  ）