The number of voluntary blood donors in Beijing in 1993 is ______.A.more than 30 000B.more
公共英语
已帮助 人
The number of voluntary blood donors in Beijing in 1993 is ______.
A.more than 30 000
B.more than 28 000
C.more than 15 000
D.more than 14 000
请帮忙给出正确答案和分析,谢谢!
