⑴Do you have brothers? ____         A. Yes，I have two uncles.

⑵Do you have sisters? ____             B. Yes，I have twelve classmates.

⑶Do you have uncles? ____             C. Yes，my friends are nice.

⑷Do you have aunts? ____              D. No，I don't have sisters.

⑸Do you have friends? ____            E. Yes，I have an aunt.

⑹Do you have classmates?____       F. Yes，I have brothers.

已知直线y=x+b，b∈﹣2，3，则直线在y轴上的截距大于1的概率是____ 

My favourite____is ____.

如果苹果每千克a元，雪梨每千克b元，那么：

  ①4a表示____               ②2b表示____

  ③a－b表示____               ④5（a＋b）表示____