到原点距离为5个单位的点表示的数即绝对值是5的数有两个，即±5．
故填空答案：±5．
I like football very much. I want _________a football player. [ ]
A. is
B. am
C. to be
D. be
(五)题4-9～题4-12，画出全剖的左视图。
