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2017年八年级寒假作业答案大全(深圳出版社)

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2017年八年级寒假作业答案大全(深圳出版社)

  数学答案:

  勾股数(1)

1.C 2.D 3.60/13cm 4.13 5. 连接B、D,36cm2

6.C

勾股数(2)

1.C 2.B 3.A 4.130 5.24

实数

1.A 2.C

3.正负根号5 4.2倍根号2 5.0

5.1

6.(1)2倍根号2

(2)根号3

(3)14+4倍根号3

(4)6

P22平移与旋转

一:AB

二:7.5 60

  P23

6.(2)解:∵正△ABC

∴AB=BC

又∵△ABD由△ABC旋转

∴△ABD≌△ABC

∴AB=BC=AD=DC

∴四边形ABCD为菱形英语

  英语答案

happy1

  一

what a melody(悦耳) song it is!

what a fast boy he is !

what a heavy girl she is !

what a beautiful school it is !

what a good boy he is !

what a beatific(幸福) boy he is!

  二

is cleaned

were taken

is maken

was showed

are inviten

wasn't gave

was slolen ; was found

  三

turtle

tiger

japan

Mexico

tiger

sierra leone

  P39.一:

better best havier heaviset

more most older oldest

bigger biggest more expensive most expensive

more smart most smart better known best known

more badly most badly less leas

more carefully most carefully fewer fewest

more slowy most slowy thinner thinnest

more healthy most healthy more easily most easily

hotter hoyyest oftener oftenest

farer farest larger largest

  P40一:

plan to do 计划做某事 He planned on taking his vacation in July.

hope to do 希望做某事 We hope to see you soon.

agree to do 同意做某事 No results found for agree to do.

refuse to do 拒绝做某事 She asked him for a loan, but he refused.

finish doing 完成某事(后面就不打某事..到时记得自己加上哈)Have you finished reading that magazine?

enjoy dong 擅长....I enjoyed reading these books very much.

practise doing 练习...I practise my swing.

suggest doing 建议..I suggest our going to the park on Sunday

admit doing.承认... I admitted breaking the window.

deny doing否认 denied having seen these watches before.

arrange for 安排...I’ve arranged for a taxi.

offer to do 提供They offered to help me

like/love+doing喜欢.. She likes playing the piano

hate to do 遗憾 hated to have quarrelled with her.

hate to do 讨厌 He hated to have quarrelled with her.

remember to do 记住去做某事 Do you remember her telephone number?

remember doing 记得做过某事 I remember telling you about it once.

forget to do 忘记去做某事 I forgot posting the letter.

forget doing 忘记做过某事 Don't forget to post the letter.

  p43

动词 过去式 过去分词

be was been

cook cooked cooked

know knew known

swim swan swam

  get

got got

teach tought taught

leave left left

fell felt felt

smell smelt smelt

drive drove driven

run ran run

think thought thought

keep kept kept

buy bought bought

begin began began

do did done

cost cost costfind found found

throw threw throw

stand stood stood

动词 过去式 过去分词

speak spoke spoken

come came come

give gave given

hear heard heard

send sent sent

hurt hurt hurt

see saw seen

steal stole stolen

take took taken

sleep slept slept

sit sat sat

meet met met

bring brought brought

fly flew flown

wake woke waken

choose chose chosen

lose

lost lost

read read read

rise rose risen

wear wore worn

  P50

Early to bed

Get up early to exercise every day

To eat less fatty food and more milk.

Do not eat too many sweet can cause obesity.

In the case of hot weather drink plenty of water.

Can not drink beverages,drink plenty of water.

In the winter changes according to the right to add their own clothes to not cath a cold

The eyes will not watch TV much,so choose the appropriate time watching TV.

Playing games in not good for mental and physical,we need to less play

  科学选择题答案:

  专题一

1. ACBD 增大 100% 降水

P661.①水果导电性与它的酸性有关 ②水果导电性与它本身的质量无关

2. 乙 避雷针 躲入建筑物内或就地蹲下

  专题二

P55 压力不变时,受力面积减小,压强增大。

BBCCBD

受力面积 压强 490 增大 水的密度不变时,越深,水内部压强越大

P57

1.B 2.A A 暖 40 高压 冷锋 晴朗干燥 甲乙 A

  专题三

二、1、B 2、(1)A (2)A(3)平流,50%-60%。

3、(1)高压系统,冷锋系统,晴朗。

(2)江苏。

  专题四

二、

1、A 2、B 3、C 4、D

三、

(1)难溶,乳浊。

(2)会使鱼类大量死亡,破坏生态平衡。

  专题五

一、略。

二、1、C 2、B 3、C 4、C 5、D

  专题五

1、C 2、B 3、C 4、C 5、D

P62 四、糖尿病饮食包括主食:如粳米、富强粉;含热能低的食物如:青菜、白菜、黄瓜、冬瓜、番茄、豆腐、黄豆芽等;还有少量的瘦猪肉、鸡蛋。糖尿病的病人禁食葡萄糖、蔗糖、麦芽糖等纯糖食品

  专题六

二、1、C 2、C 3、D 4、B

5、(1)非条件反射。

(2)无效。

(3)条件。

  专题七

二、1、D 2、D

P66

1.①水果导电性与它的'酸性有关 ②水果导电性与它本身的质量无关

2. 乙 避雷针 躲入建筑物内或就地蹲下

  专题八

一、略。

二、1、结论一:苹果的导电性与苹果的的味道有关,且苹果越甜,导电性能越强。

结论二:苹果的导电性与苹果的质量,体积无关。

2、(1)乙。

(2)避雷针。

(3)先把身上的金属物品抛开,然后躲进大楼内。

  历社判断题

  第一单元:

1.对错错对错

2.(1)⑤④②①③

(2)②①③⑤④

ABEF

CDG

70页

AEF

BCDG

  第二单元:

错错对错错

  历史73页连线

一 连②连1

二连④连2

三连①连4

四连③连3

  第三单元:

错对错错对错错对对错

2.一连②连3

二连③连2

三连①连1历史 第二单元

P73(2)尼罗河定期泛滥--发达的农业---村落的形成---手工业....----尼罗河两岸的小国....---初步统一的古埃及国家----地跨...

127楼

  历史P74:

二.1.

(1)图一,古埃及--象形文字,金字塔,太阳历

(2)图二,古印度---佛教,数字符号

(3)图三:古巴比伦 --楔形文字,空中花园,几何学,太阴历

2.乔达摩·悉达多

佛教是三大佛教最早创立的,宣扬“众生平等”公元前后,传入中国

3.<汉莫拉比法典>

反映了当时奴隶主拥有至高无上的权利

  历史第四单元80页

错错对错对错对对对对

孔子 玄奘 李白

岳飞 黄道婆 毕升

第5题:赤壁之战是208年,三国是220-280年,赤壁之战是确立了三国鼎立的基础;

第8题:北宋,

历史P75

图一 象形文字

图二 楔形文字

图三 甲骨文

2.生活中动物的形状、自然现象

3.说明人类走向了文明

3.尼罗河 BC3500

两河 BC3500

印度河 恒河 BC2500

长江、黄河 BC2070

(2)促进农作物生长、土地肥沃、适合人类居住