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- 3Look!The boy is sitting__a tree.A,on B,in C,of D,above
- 4And each break and summer we get together and catch up and stuff,
- 5The()of this computer is very ()的同义句
- 61998分之1减1的差乘1997分之1减1的差乘1996分之1减1的差乘……乘1001分之1减1的差乘1000分之1减1的差等于
- 7the reason why coal is still a very valuable source of power is that atomic power is not available in sufficien.
- 8移动等式中的一个数字,使101- 102=1这一等式成立
- 9在等式3x( )-2x( )=20的两个方格内分别填入一个数,是这两个数互为相反数且等式成立,则第一个方格内的数是
- 103又2分之一乘负七分之五减负七分之五乘2又二分之一减七分之五乘负二分之一