8字成语组词

1.Both of us speak chinese.(否定句)neither of us speak(s) chinese s要不要加呀? 一根质量分布及粗细均匀的木棒重为G,当将其放在水平桌面上八分之一露出桌面时,在棒的末端用2100N的力竖直向下压木棒,另一端刚好能离开桌面,则该棒的重力G为多少N?一块密度均匀长度为16 初三语法题Are the two answers correct?No, correct. A no one is B both are notC neither is D either is not请再说明一下为什么不选其它答案 求 用行列式解方程组x+2y+z=0 2x-y+z=1x-y+2z=3 已知x>1,证明：x> ln(1+x)前面的过程我知道令f(x)=x-ln(1+x) (x>1)f'(x)=x/(1+x) >0所以f(x)在1到正无穷递增然后为什么 又算一下f(1)呢/ （1）两个有理数的和为负数,积为正数,则这两个有理数（ ）A.都是正数 B.都是负数 C.一正一负 D.不能确定（2）（1/100-10）*（1/99-1）*（1/98-1）*...*（1/2-1）（3）观察下列等式（式子中的“!” 两跟同样长但粗细不一的蜡烛,粗蜡烛可燃4h,细蜡烛可燃3h,一次停电,同时点燃两跟蜡烛,来电后同时熄灭,发现粗蜡烛的长是细蜡烛2倍 求停电的时间. 谁会这道数学题?急死了!汽车从A城开往B城,第一小时行了全程的1/6,第二小时的路程比第一小时行的多1/4,这时离终点还有15千米,AB两城相距多少千米? 帮忙修改一下语法（论文节选）改好了追加40With the boiling of “Super Star” in Hunan TV,idolatry became popularly among the college students again.Magazine of Chinese College students’ Employment organized a survey called “col 请提出修改意见,并指出语法错误,改得好的追加50分!Helping Others Helping others,in my opinion,is an old but common subject among us.My parents always told me to help others as much as I can.Since it is so important,what’s the impo 英语改变句式~加50分~快把以下句子改为否定句和一般疑问句并做肯定否定回答.1.My mother will go shopping tomorrow.否定句：_____________________________ 一般疑问句：__________________________ 肯定否定回答： 英语改变句式~50分~把以下句子改为否定句和一般疑问句并做肯定否定回答.1.She is going to the cinema tonight.否定句：_____________________________一般疑问句：__________________________肯定否定回答：_________ 点（2,3）是函数f(x)=(ax+b)/(cx+d)的对称中心,求f(-1/3)+f(-1/2)+f(-1)+f(13/3)+f(9/2)+f(5)? 函数f(x)=cx+d/ax+b关于点P_________________对称.能说明的尽量说明~ 形ax+b/cx+d的函数图象如何找对称轴 帮忙出些小学口算题最高数在20以内的加减法题100道,最高数在50以内的加减法题100道急用,自己出不了那么多.请帮忙 谁可以给我一些小学的口算题!六年级上册以下50个左右```谢谢`` 小学四年级（下）口算题多一些. y=cosx/x^2求导 哪里有小学口算题 y=x^3/cosx 求导 矩形ABCD,BC=10,CD=6,E为AD上移动点（可与B、C点重合）,联接CE,过B向CE引垂线,交CD所在直线于F.（1）当F与D重合时,求DE的长；（2）设DE为x,DF为y,求y与x得函数关系式和定义域；（3）AD上是否存在一 已知方程组4x-3y=k,x+2y=16 x与y为相反数 则k的值为—— 郁闷..1、小红看一本故事书,第一天看了30页,第二天看了42页,这时已看的与未看的页数之比是2：3.这本书一共有多少页?（算式）2、星期六,小明从家到相距1.3( )的超市购物,他买了600( )的河虾, 已知2/1小于x小于或等于1,化简 |X-1|-|1-2X|2.若等式（2x-4)平方+ |Y-2/1|=0中的X,Y满足方程MX+4Y=8和5X+16Y=N,2M的平方-N+4/1MN的值3.已知4X-3Y-6Z=0 .X+2Y-7Z=0 XYZ不等于0 求2X+3Y+6Z)/(X+5Y+7Z 的值. y的2分之X次幂求导 高一数学期末题出得可难,但我能考135,与全班第一差4分高一数学期末题仍然出得可难,我考了89,与全班第一差49分.郁闷呀,数学咋往高出补里呀,咋着才能让题一遍坐下来全对? 我数学偏科,语文英语挺不错的,就是个数学不行,郁闷死了! 求各位大哥大姐帮帮忙,怎样才不会让我偏科六年了,要升初中了!帮帮忙 英文语法题!50分!Line.1--Janet:let's going swimming.Line.2--Albert:that's good idea.i'll just go and find my swimsuitLine.3--and towel.Which shall we go?hong kong or the New Line.4--Territaries?Line.5--Janet:Not the beach!I mean the swimming poo ◆◆◆N道高中英语语法问题,以下给出N选一,并回答我在某些题目旁提的问题~1、The threat of global warming is __A__ the most important of all modern environmantal problems.A.among B.of25、Students show that those who took 英文语法题! !急! !还是50分!A secondery 2 schoolboy arrested last night after broken into his school.He was trying to steal the examination papers. The school cretaker was making his rounds about 9:30p.m. He was noticed some light inside the 50分英文语法题括号内的部分是什么句子成分1.I shall answer your question after class(shall answer)2.There is going to be an American film tonight.(There is going to be )3.Do you have anything else to say(anything)4.To be honest:your