八年級上册英語(課文)求語法知識! what art you reading,jill it's a book sbout the future. soundscool.sowhat will the future be like? well,cities will be more crowded and andpolluted.therewill be fewer trees and the environment will be in great danger. that sounds bad!will we have to move to other planets? maybe.buti want to live on the earth. then what can we do we can use less weater and plant moretrees.everoneshould play a part in saving the earth

八年級上册英語(課文)求語法知識! what art you reading,jill it's a book sbout the future. soundscool.sowhat will the future be like? well,cities will be more crowded and andpolluted.therewill be fewer trees and the environment will be in great danger. that sounds bad!will we have to move to other planets? maybe.buti want to live on the earth. then what can we do we can use less weater and plant moretrees.everoneshould play a part in saving the earth


一般將來時
由助動詞will+動詞原形構成.
I will go there tomorrow.
親:祝你學習進步!



英語翻譯
翻譯
“我們應該盡力幫助窮人,”比爾·蓋茨說.
“We should ______ ______ ______the poor,“said Bill Gates.
(每條橫線一個單詞)


try to help



八年級上册數學最難的十道題
找十道題啊(含答案)


a+d+k=87
a+b-c=87
k+c=?



這個含有絕對值的不等式怎麼解?
關於x的不等式X+|X-m|>1的解為R,求m的取值範圍.
解集為R


若m>x則原不等式為x+m-x>1,解出m>1因為這是與x有關的不等式,所以m不能>x
當m=x時,解出x>1,則m>1成立
若m1,m



圓的面積
小剛量得一棵樹幹的周長是125.6cm.這棵樹幹的橫截面的面積是多少


(125.6÷3.14÷2)²;×3.14



下麵的選項中正確的賦值語句是(char a[5],*p=a;)().A p=“abcd”;B a=“abcd”;C *p=“abcd”;D
為什麼C不可以理解為指針p的內容為abcd


正確結果是:A
A p=“abcd”;P是字元型指針,將“abcd”的地址給了P,也就是P指向“abcd“的首地址,也就是指向‘a'的地址;
B a=“abcd”;a是字元數組的地址,不可賦值;
C *p=“abcd”;*P是字元,不能將字串賦給它,若是*p='a',則正確.



88-7x=5x-20 4(4x-11)=3(22-2x)9.4乘[1.28-(x-0.31)]=0.47


88-7x=5x-20
108=12x
x=108/12
x=9
4(4x-11)=3(22-2x)
16x-44=66-6x
22x=110
x=5
9.4乘[1.28-(x-0.31)]=0.47
9.4*(1.59-x)=0.47
1.59-x=0.47/9.4
1.59-x=0.05
x=1.64



在半徑為1的圓中,圓心角為周角的五分之三的角所對的弧長是含這段弧的扇形的面積是?


圓心角與圓周角之比就是弧長與圓周長之比,也是扇形面積與圓面積之比.
圓心角與圓周角之比為3:5所以弧長=3/5圓周長=3/5*2派*1=1.2派
扇形面積=3/5圓面積=3/5*派*1^2=3/5派



求等比數列(2n-1)*2^n的前n項和


S=1*2^1+3*2^2+……+(2n-1)*2^n(1)2S= 1*2^2+3*2^3+……+(2n-3)*2^n+(2n-1)*2^(n+1)(2)(1)-(2)得-S=1*2^1+2*(2^2+2^3……+2^n)-(2n-1)*2^(n+1…



(200-10%x)÷5=50解方程


(200-10%x)÷5=50
200-10%x=5*50
200-10%x=250
-10%x=50
x=-500