九年级寒假作业答案物理化学语文数学英语历史学科

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九年级寒假作业答案物理化学语文数学英语历史学科
物理
填空题
1分子 原子核 和外电子 2 1X10的3次方kg/cm的2次方 ，每1立方米的水的质量为1kg 3运动 静止 运动 对立 4 惯性 改变物体运动状态 力的作用是相互的 5 8 800 6 增大压力 增加接触面的粗糙程度 润滑油
单项选择题 BCAAD CCA 不定项选择 A D ABD C BCD
实验题
（1）3 6 （2）液体密度（3）135 （4）液体密度 排开液体密度
计算题
1 因为F=G=mxg =200x10=2000N 所以P=F/S=2000/0.1=20000(Pa)
2 因为W=FxS=300x10=3600(J) 所以P=W/t=36000/20=1200（W）
3 1）因为 η=W有用/W总 所以W有用=ηxW总=480（J） 2） 因为 W总= W有用+W额 所以W额=W总-W有=120（J）
3）因为W=FxS 所以F=W/S=600/6=100(N) 4) 因为F=G/N 所以G=FxN=300(N)
1 运动 运动 静止 惯性 2 加重货物 ：当家出面粗糙程度一定时，压力越大，摩擦力越大 安上带花纹的轮胎 ：当压力一定时，接触面粗糙越大，摩擦力越大 3 做功 内 温度
科学与探究（明天更）
化学
单项选择题 ADCBD AAD 不定项选择 CD B A
实验题 1 88 Nacl Hcl 解：设NaCO3质量为X，产生Nacl质量为y
Na2CO3+Hcl ==CO2↑+H2O+Nacl
106 36.5 58.5
x 73g y
x=21.6 y=11.7 答....
2 燃烧 左 4 氧气占空气1/5 生石灰不足 3 试管 烧杯 气密性 H2+Cl2==2HCl 化合 不一定 HCl 有白色沉淀产生 4无

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语文

现代文阅读 ； 目标 1 人们应该为自己设下奋斗目标并持之以恒地朝着目标努力，这样才能取得突出成就。 2 虽然调查样本总量的5％找不到了，但95％的人还在。调查结果令他吃惊：属于原来的97％的范围内的人，除了年龄增长10岁以外，在生活、工作、个人成就上几乎没有太大的起色，还是那么普通与平庸；而原来与众不同3％，却在各自的领域里取得了相当的成功，他们10年前提出的目标，都不同程度地得以实现，并正在按原定的人生目标走下去。(原文第三段后半部分) 3（X） 4那些神话般的境界，驴子听了大为惊异 生日 1， 1，30岁生日却点燃了53支蜡烛 2， 生日提前两天过 3，摆放了母亲生前最爱的炒花生。 2， 妻子为“我”过生日 “我”为母亲过生日 3，不能互换，“莫名”指说不出，“莫大”指极大，前者突出了母亲的难言之情，后者突出了“我”的深深忏悔。 4，A处：虔诚的忏悔和自责。 B处：感受到母爱后的激动。 C处：既有喜悦 激动，又有遗憾 自责。 5，母亲：慈爱 “我”：孝顺 妻子：善良

英语选择

BAABD DCAAC BBCDD BBADB DBABD AADDBC BCCDB CABC BBBCB CDCBC TTFFF FFTTF

数学填空题 1. 两个角相等的三角形是等腰三角形 2. 1/58 3. -5/3 4. 26cm 5. -4根三 二四 减小 6. 3根2 7. 2. 8. 8 10/3 1、二、四 2、10% 3、10 4、3/5 5、AE=EC 6、y=-8/x 7、90° 8、24平方厘米 选择 CDBAB,BCBCCD

历史填空

1早期猿人 晚期猿人 早期智人 晚期智人 2《汉模拉比法典》 3秦朝 西汉 4孝德 大化改新 5印度人 6《天方夜潭》 阿拉伯 7哥伦布 麦哲伦 8查理一世 路易十六 9莱克星顿枪声 英国 10法西第一帝国 《共和十年宪法》 11英国 克来武 12 玻利瓦尔 章西女王 13马克思主义哲学

政治经济学 科学社会主义 14人民宪章运动 共产党宣言 15解放黑人奴隶宣言 奴隶制 16亚历山大二世 农奴制 17幕府将军 明治维新 18 德国 奥匈帝国 意大利 英国 法国 俄国 19达尔文 物种起源 20 《向日葵》 《英雄交响曲》 1， 1--- 达 芬奇 2---牛顿 3----爱因斯坦 4-----梵高 5----贝多芬 6----爱迪生 7----阿基米德 2， 俄狄浦斯王---索福克勒斯 哈姆雷特---莎士比亚 荷马史诗---荷马 复活---列夫 托尔斯泰】

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2010年九年级(上)《快乐寒假》英语与语文寒假作业答案

英语答案：

英语练习一
worry about
be divided into
worry too much
keep secrets
fargue with sb.
forgive sb. for sth.
show off
give up easily
take care of
pay attention to
different kinds of ideas
devote to charity
modest generous
unlucky shy
hard-working inpatient
impossible unfair
inactive full
dishonest incorrect
weak stupid
to save
not meeting
to eat
explaining
putting
butterfiles
planning
unfair
leader
energetic
What is he like
What does Sam often dream about
Which women is our new teacher
The were divided into 4 groups by Mr zhang
His young sister is taken care of by Peter
Your star sign is divided by your birthday
His mother is so kind that shi helps others
There is nothing wrong with Jim's mind
He is clever enough to solve the problem
Can you tell me how to get to the nearest shop
AAABB ADBAD AC
CBCDA DABCD
CACCCAB
作文略


英语练习二
prefer
would rather
would rather
prefer
would rather
would rather
prefer
prefer
prefer
nothing
noting
everybody
nobody
anything
nothing
none
anyone
everyone
something
everybody
BABDA CBCBB
I prefer watching TV to go to have a walk with you
It's interesting to chat with others
If you fell sad or scared,try to wear in yellow
She painted the wall blue and hope it will bring you success
I think it will rain
BCBCA DBADB
CDCBBC
作文略

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英语练习三
from
at
about
whti
to
on
about
in
feel stressed
at the moment
be very valuable
on time
hand in
give up doing sth.
plenty of
hear from sb.
a piece of advice
forget to do sth.
go out late
be in trouble
though
attention
confidence
talented
prouds
replied
miss
spare
on worries
shout
stressed
causing
weight
balance
covers
getting
has come
to follow
walk
to deal
listening
to help
clean
drawing
to catch
to tell
fell
smoking
don't
to buy
discussing
hasn't finished
to meet
to write
sitting
to stay
to save
CACBA ADDDA A
BCDCC BDCAA
CADCDD
作文略

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英语练习四
reported
especially
series
months
interview
director
prize
cartoon
movie
announced
website
space
DADBB ACADD
talking
think
lasted
quicker
much homework to do that i have no time to watch TV
Why these tigers are being killed
a number of
beautifully==>beatuflyu
hardly==>hard
back==>去掉
all==> both
are==>去掉
boring==>bored
any==>后面加 other
more==>much
very==>去掉
in ==>of
of==>in
BCADA BACBC
BCAAACDACB

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英语练习五
acting
to be
loss
to become
successful
beauty
beginning
was chosen
final
achievement
not only but also other parts
mounded loss of
beauty charm attracted attention
during her lifetime earned four more nominations
achievements went beyong industry
consider not just as humanitarian
put most to
later received interesting gift
explain of class
sure if you are right
am i==>换成 i am
was==>后面加to
to==>for
finally==>final
to==>去掉
to==>去掉
into==>去掉
include==>including
devoted
will take
was watching
marks marks
to take
dream
was taken
look
will find
were watering
bring
DBBCCADC
BDDCBADCCC
CCABDDAACB

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英语练习六
energetic
represents
easily
thousand
quarrelling
advice
ours
shares
attacked
bored
The ice is thick enough to skate on
Red can help you easily make a decision when you have difficulty
I don't know how to cheer you up
She is not only pretty but also polite
This morningteachers askedme why i was late
DBCAD BBADA CACB
DCABA CCACD BDCAD DCBCA
作文略