《公共政策学》

9分之8-（9分之8-25分之9）简便算法 21又9分之7乘以7分之1简单算法 1/1×3+1/3×5+1/5×7+…1/17×19+1/19×21这道题如何简便运算?用算术法做!答对加50分! 1/1*3+1/3*5+1/5*7+.1/17*19+1/19*21怎么简便计算? 1/1*3 + 1/3*5 + 1/5*7 + …+ 1/17*19 + 1/19*21 如何计算 简便计算 1×3分之1＋3×5分之1＋5×7分之1＋……＋17×19分之1＋19×21分之1 记住!是简便计算! 英语翻译 英语翻译Dear There`re always some things that let me in tears.I know that you didn't tell me anything,so it's just my guess and also I am not sure whether it's right or not.please believe me,i really like you Sometimes I can't express exactly wha 英语翻译ANIMAL PHOTO COMPETITIONRules of entry1.Those who enter the competition must be under the age of 18.2.To enter the competition you must send in three photograpgs of animals which you have taken yourself.Both you and a parent must sign the 英语翻译对不起,我不会讲太多英语,我们可以用中文交谈吗? 英语翻译1.Would you please pass me _______ mini-dictionary next to the radio?And I also need ______ colourful pencil to write something.A a ,a B the ,the C the,a D a,the2.What does the lady look like?----______A Shi is fine and patient B She like 它是19元6角用英语怎么说 入乡随俗用英语怎么说? 我现在该怎么办用英语怎么说 19元的英语翻译中文读法 19元起用英语怎么说还有哪个网站学英语比较好 16*17*18*19*20怎么写 16.17.18.19. 1,2,3,4,16,17,18,19平均分成2组,有几种分法?1,2,3,4,16,17,18,19平均分成2组,有几种分法?阿阿阿阿阿 阿 (1+1/16+1/17+1/18)×(1/16+1/17+1/18+1/19)-(1+1/16+1/17+1/18+1/19)×(1/16+1/17+1/18）= 19-18+17-16+15.-4+3-2+1 (1+16分之1+17分之1+18分之1)*(16分之1+17分之1+18分之1+19分之1)-(1+16分之1+17分之1+18分之1+19分之1）*（16分之1+17分之1+18分之1） (-1/16)^17*(-3)^18*(-2)^19(-1/16)的17次方乘以（-3）的18次方乘以（-2）的19次方结果用幂的形式表示 英语翻译 从十一月5号到十一月10号这段时间里 用英文翻译11月6日急!急!急!我要写作业! 十一月二日 英语翻译 英汉互译：在11月13日（ ） 英语翻译 我将在上海呆在下周. 英语翻译 英语翻译 英语翻译Our sample is attached under separate cover.As we have received large number of orders from our clients,it is quite probable that our present stock may soon run out.This offer is valid for two weeks.Your prompt order will be much apprecia 英语翻译i stopped writing stories to you,coz your corrections turned out to be pretty strange