巴西人口中所占比例最大的是[ ]
A.白种人
B.黑种人
C.混血种人
D.印第安人
答案:A
— Have you heard the good news?
— No, what ? [ ]
A. is it
B. is there
C. are they
D. are those
发现喷头有漏水现象,应()
A.立即更换
B.立即维修
C.立即清洗
D.立即吹扫