挑战习题
1/5单选题
难度:

1.式子-6-(-4)+(+7)-(-3)写成和的形式是()
A -6+(+4)+(+7)+(-3)
B-6+(-4)+(+7)+(-3)
C(-6)+(+4)+(+7)+(+3)
D(-6)+(-4)+(+7)+(+3)
提示1:
5pyJ55CG5pWw5YeP5rOV5rOV5YiZ
正确答案:Qw==
5YeP5Y675LiA5Liq5pWw77yM562J5LqO5Yqg5LiK6L+Z5Liq5pWw55qE55u45Y+N5pWw44CC5pWF6YCJQ+OAgg==