下列式子求导1.f(x)=x^3-3x^2+3x-22.g(x)=-3x^3+5x^2-4x+113.u(x)=-x^3

RT 化简下列各式a²sin810°-b²cos900°+2abtan1125°

填词完成下列对话
What is the cat doing?
It___sleeping.
Doyoulike it?
Yes,___,___
When_____you goto bed
I go to bed ____9:00
What _____you?
I go ___ ____ ____ 9:30
Have you ____any ink?
Yes,_____ ______.
May I____ it?
Of course.Here you are.

阅读短文,回答下列问题
Traditional Chinese doctors often use the words"yin"and"yang".They think people's health problems are caused by tthe imbalance of yin and yang in diet.In their opinions,some foods areof yin and others are of yang.Yin foods can clear bodies'heat.Bananas,watermelons,salt and eggplants are all yin foods.Yang foods can improve blood circulatian.Chicken,chestnuts,beef and peaches are all yang foods.
Then you may ask:What kind of food should I eat,yin or yang?Please read the following suggestions:
If you are often restless or have a red tongue,please eat more yin foods.And if you often have cold hands and feet,or slow pulse rate,please eat more yang foods.
1.Are eggplants a kind of yang food?
2.If my sister often has cold hands and feet,what foods should she eat?
3.Do western doctors believe th theory of yin and yang?
4.How many yin foods are mentioned in the passage above?
5.What can yang foods do according to the passage?

完成下列对话.
a:may i come in,sir?
b:yes,_____.
a:_____.i am late.
b:why are you late?when did you get up this morning?
a:_____at 8:00.
b:when did you go to bed last night?
a:_____at 12.
b:why were you so late?
a:because i read the story of monkey king.it is great.don't you like it?
b:yes,i do.ok.go back to your seat,don't do that_____.

根据实际情况回答下列问题.1.Who helps you with your English at home?
2.Can you tell an English story?
3.Where do you learn English?
4.How many years /How long have you learnt English?

高一地理读图(阴影部分表示黑夜),回答下列问题
（1）此图所示日期是 月 日或 月 日
（2）此时太阳直射点的地理坐标是
（3）此时地球上除日界线两侧日期不同外,还有一条经线的东西两侧日期也不相同,这条经线是
（4）图所示当天地球赤道上日出的地方时
（5）从昼夜半球看,图中NAS叫 线
（6）此时（ ）
A、地球公转速度最快
B、悉尼和伦敦的昼长相等
C、塔里木河水位达最高
D、北京正午太阳高度角达一年中最大值
G

观察下列运算结果:15*15=225;13*17=221;14*16=224;25*25=625;23*27=621;21*29=609;35*35=1225;52*58=3016;
51*59=3009
请你回答：36*34=(),49*41=(),82*88=()
请写出规律,o(︶︿︶)o 唉,实在找不出规律

计算下列各式(0.75a^4b^3c-½a^4b^5-1/10a^3b^2)÷ (-0.5a^3b^2)
若x^2+mx-15=(x+3)(x+n),则mn的值为
已知ab=9,a-b=-3,则a^2+3ab+b^2的值为

已知整数a1,a2,a3,a4·····满足下列条件:a1=2,a2=-|a1+1|,a3=-|a2+2|,a4=-|a3+3|,···依此类推,则a2014的指为
（规律分析时写的长一些）

配平下列化学方程
1 Fe2O3+HCl____FeCl3+H2O
2 Fe2O3+H2SO4_____Fe2(SO4)3+H2O
3 Ca(OH2)+K2CO3____CaCO3+KOH
4 Fe2O3+CO____Fe+CO2
化学方程式：以葡萄糖为例的呼吸作用
5 C6H12O6+O2___酶___CO2+H2O+能量

根据短文内容回答下列问题.i am a cook today!my parents are bu
y

高等数学,计算下列二重积分

同意改写下列句子Smoking has a great effect on health ______________is great(词组）

下列除了1.clothes 2.shirt 3.dress 4.hat 5.shoe 6.trouser 7.skirt还有哪个写衣服的单词?
ATROUSERSIJ
EIGHAWKIHAT
COMDRESSIQC
ANSHYAZORBO
PVHADTDCTEA
CLOTHESKIRT
XOEHLRCFGIN

判断下列化学反应能否生成
(1)CaCO3+HCl (2)Ba(NO)3+H2SO4
(3)AgCl+HNO3 (4)Cu（OH)2+2HCL
（5）NaCl+HNO3 （6）2Fe(OH)2+3H2SO4
(7)Cu(OH)2+Na2SO4 (8)NaOH+BaCl2
（9）CuCl2+NaOH (11)NaOH+FeCl3
(10)Ca(OH)2+K2Cl3 (12)NaOH+CuCO3
(13)Cu(OH)2+Mg(NO3)2
不能反应的可以说说原因么,我不是很懂的……唉.

英语翻译
翻译下列词组.
上网
活动调查
至于
.
发烧
牙疼
躺下休息
have a sore throat
hot tea with honey
.
骑自行车兜风很有意思.
It's very interesting to _____ _____ _____.
关于你的假期计划,
Can I ask you _____ questions about your ____ _____?
我迫不及待地制定我的暑期计划.
I ____ ____ ____make my plan for summer vacations.
我希望我可以忘掉所有的烦恼事.
I hope I can ___ ____ ____ ____.
你准备在长城上停留多长时间呢?
______ _____ are you ____ on the Great Wall?
我们做一份苹果奶昔吧.
________ make an ______ _______ _______.
请给我两勺蜂蜜.
Please give me ____ _____ ____ _____.
把玉米花放入爆米花机中.
Put the popcorn _______the _____ _____.
翻译下列词组:
fold the clothes__________________
take out the trash________________

解释下列词语 干涸 稚嫩 掣肘 整饬 诡谲 吝啬 诅咒 挟持 涣散 揣度 虔诚
解释下列词语 干涸 稚嫩 掣肘 整饬 诡谲 吝啬 诅咒 挟持 涣散 揣度 虔诚 镌刻 社稷 意蕴 瑰宝 怂恿 谄谀 搭仙 肇事 泯灭 忖度 渊薮 尘寰 料峭 悭吝 砥砺 尺牍 讪笑 缜密 丘壑 撺掇 蹒跚 蹊跷 秋毫无犯 味同嚼蜡 繁文缛节 恃才傲物 惴惴不安 日臻完善

补全下列八字成语

根据汉语提示,完成下列句子.
1.The boss comes to his factory on time____ ____ ____ ____(即使下雨)
2.There's____ ____ ____ ____(一座九层高的公寓楼) next to the bank.
3."Don't make mistakes____ ____ ____(在你的拼写上)," the teacher said to me.
4.We like our teacher____ ____ ____ ____ ____(因为他那流利的英语口语)
5.One can travel there by ship or plane.Most people____ ____ ____(选择后者)

分析下列定语从句
The doctor advised Vera strongly that she should take a holiday,but ____didn't help.( it )
If a shop has chairs____women can park their men,women will spend more time in the shop.( where )

下列物质:(1)CH3OH;(2)H2O;(3)C2H4;(4)NaHCO3;(5)CO;(6)CO2;(7)C6H12O6;(8)CO(NH)2;(9)CaCO3
属于有机物的是
属于无机物的是
理由是

根据英文解释,写出下列单词
1.P________a card you can use as letter
2.r________get sth from
3.e________one made of paper for a letter
4.h________wish
5.p________with their friend ship through change letters.
6.c________people have some hobbies they join togther

修改下列病句 1Do you like rices?2What do you have about breakfast?3What is your favorite
colors?
4Jenny does her homework in afternoon
5It's time on lunch
写一张见约条包what will you do?where will you meet when will you meet?

请问下列句子怎么翻译?The press release is intended for two audiences:the news editor and more

根据以上内容.回答下列问题..
Today is Sunday.Tom wants to go to the cinema with Lin Tao.He looks at the posters.
Poster 1 Harry potter
Show time:1:00pm 3:00 pm 7:30pm
Day:Saturday
Price:Adults 60yuan Children 30 yuan
Poster 2 The Lord of the Rings
Show time:1:30 pm 4:00pm 8:30 pm
Day:Saturday
Price:Adults 65 yuan Children 30 yuan
Poster 3 Spiderman
Show time:1:00 pm 3:00pm 5:00 pm
Day:Sunday
Price:Adults 70yuan Children 35 yuan
根据以上内容回答下列问题.
1.Which film can Tom watch on Sunday?
____________________________________________________________.
2.Which film can Tom watch at 3:00 pm on Saturday?
_____________________________________________________________.
3.Kitty is three years old.If she wants to see Spiderman with her mother,how much should they pay?
________________________________________________________________________________________________

找出下列规律,1,-3/4,5/9,-7/16,9/25
写出下一个数 并说出为什么

初中数学
观察下列式子
3^2+4^2=5^2
8^2+6^2=10^2
15^2+8^2=17^2
24^2+10^2=26^2
.
(1)找出规律,并根据此规律写出接下来第5个式子
(2)请你证明所发现的规律
(3)在RT三角形ABC中,

QBASIC试题~
写出下列程序运行结果.
LET A=1
LET B=5
LET T=A
LET A=B
LET B=T
PRINT B
END
运行结果:(_1_)

根据下列步骤鉴别氮肥(NH4)2SO4,NH4NO3,NH4HCO3
分别闻气味 有强烈气味的是 【 A 】 无强烈气味的是【B】【C】 加入 Ba(NO3)2溶液 再加稀HNO3 无沉淀的是【B】 有 白色沉淀的是【C】 问 A B C 为 上述三种 氮肥的 什么

阅读理解,根据短文内容,补全下列句子 if you want to pass exams, yo
d bett

翻译下列文章

根据短文内容回答下列问题
Milk was one of the main human foods long before history was written .It will probably remain one as long as there are animals that give milk.
The old word"milk"came from Sanskrit,one of the oldest languages known to man.A very old picture of milking animalshas been found.It was drawn five thousand years ago .People got their milk from their own animals.But in modern times new inventions made the milk industry a big business.In 1851 Gall Borden found a way to take some of the water from milk .This made it keep longer.Four years later,Louis Pasteur introduced a way to kill the bacteria in milk.So in the same year a speial milk bottle was made.This was followd by the invention of machines that could fill bottles with milk.
These discoveries meant that milk could be stored longer.
Some people belive that milk drinking will become less popular than ie has been.But remember how long milk has been an important food and think of the many ways in which it is useful.It seems safe to say that milk industry will always be important.
1.When did people began to get milk from animals?
___________________________________________
2.What kind of languages is Sanskrit?
___________________________________________
3.Why did people kill the bacteria in milk?
___________________________________________
4.When was the special milk bottle made?
___________________________________________
5.Is the milk one of the most important foods?
___________________________________________

英语翻译

翻译下列句子.

It's about three hundred kilometres from Shijiazhuang to Beijing. __________________________________________________________________

1翻译下列英文
The moon moves slowly,so one day on the moon is as long as two weeks on the earth and one night is just as long as two weeks on the earth.
2单项选择
1 i'm leaving for Hong Kong ,Dad.
Well ,make sure______ is ready A something B anything C every thing D nothing
2 Jim is ________ about basketball and he never misses a basketball game on TV
A crazy Bhappy C sad D angry
3 Have you read these books ____?
Yes ,I have _read them many times
A already ,before B needn't go C don't need go D needn't going
4 They ____ the same clothes A put on B dress C try on D take

观察下列等式
sin^2(30)+sin^2(90)-2sin(30)sin(90)sin(60)=sin^2(60)
sin^2(45)+sin^2(75)-2sin(45)sin(75)sin(60)=sin^2(60)
sin^2(50)+sin^2(70)-2sin(50)sin(70)sin(60)=sin^2(60)
分析以上格式的共同点,写出能反应一般规律的等式,并对等式的正确性加以证明,
最好有具体过程!
就是用 归纳法 求如何解此题- -

分解下列因式
(1)8a^3x^2-2a^5x^2
(2)a^2(x-y)+4y^2(y-x)
(3)4a^2b^2-(a^2+b^2)^2
(4)(x^2+4)^2-(2x+3)^2