1,2,3,4,5,6,7+1,2,3,4,
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/27 20:27:07
1,2,3,4,5,6,7+1,2,3,4,1,2,3,4,5,6,7+1,2,3,4, 1,2,3,4,5,6,7+1,2,3,4,1.cleaning2.watching3.listen
1,2,3,4,5,6,7+1,2,3,4,
1,2,3,4,5,6,7+1,2,3,4,
1,2,3,4,5,6,7+1,2,3,4,
1.cleaning
2.watching
3.listening
4.reading
5.newspaper
6.using
7.exercising
What are your pen pals doing?
His father is reading newspapers.
Some of my photos are here.
She is eating dinner now
I am swimming with my sister.
1、2、3、4、5、6、7
1,2,3,4,5,6,7,
1,2 ,3,4,5,6,7
1+2-3+4-5+6-7
1+2+3+4+5+6+7
1,2,3,4,5,6,7
1+2+3+4+6+7+5
1、2、3、4、5、6、7
1,2,3,4,5,6,7
1×2×3×4×5×6×7
1+2+3+4+5+6+7
1 2 3 4 5 6 7
|2 -5 1 2| |-3 7 -1 4| |5 -9 2 7| |4 -6 1
-32 1/3-5 1/4-(-3 1/7)+3.25+2 6/7+28 1/3
1×2×3×4×5×6×7×8×9-1×2×3×4×5×6用简算
1234567654321*（1+2+3+4+5+6+7+6+5+4+3+2+1）
1234567654321×(1+2+3+4+5+6+7+6+5+4+3+2+1)=?
(-7)+11+3+(-2) 1/4+(-2/3)+5/6+(-1/4)+(-1/3)等于几