2.(2014•贺州中考)Youcanborrowthebooksfromthelibrarybutyoumustrthemintime.
2. (2014 •贺州中考) You can borrow the books from the library but you must r ____ them in time.
1/1,-1/2,-2/1,1/3,2/2,1/3,-1/4,-2/3,-3/2,-4/1,1/5 2020-04-09 …
将一组数字按如图2方式排列,若(m,n)表示第m排从左到右第n个数,则(5,4)表示的数是____ 2020-05-15 …
帮我破解下这串数字什么意思9(2)4(3)6(2)2(1)4(3)3(1)4(3)9(1)6(3) 2020-05-17 …
(1)1/1*2+1/2*3+.+1/2009*2010(2)1/2*4+1/4*6+.+1/20 2020-05-17 …
1/1=11/2+2/2+1/2=21/3+2/3+3/3+2/3+1/3=31/4+2/4+3/ 2020-06-02 …
小明在计算3(4+1)(4∧2+1)时,把3写成4-1后,得3(4+1)(4^2+1)=(4-1)( 2020-11-07 …
某同学在计算3(4+1)(4^2+1)时,把3写成(4-1)后,得3(4+1)(4^2+1)=(4- 2020-11-07 …
求助1/2*4+1/4*6+1/6*8+…+1/2010*2012=1/2（1/2-1/4+1/4- 2020-11-07 …
直接写出得数．0.5×4÷0.5×4=4.2-4.2×0.5=1.2÷4×1.2÷4=6.3+6.3 2020-11-19 …
16道……最后再补到35分一定要约到最简化……(1)-1/3+15.5+(-2/3)(2)4.7-3 2020-11-20 …