求上海浦东新区最近几年的7年级第二学期期中数学试卷!

468m=0.468km
由题意得OT⊥AT
AO=6370.468km
AT=根号AO²-OT²
约等于77.2
答它的信号覆盖半径可以达到77.2千米

不断的超越自我~

我妈是老师.
这玩意绝对有滴.
不过应该不会给你.

给分啊,分再高点!

　　1.BCCCD BCDAD
　　11.C 12.B 13.D 14.D 15.C 16.A
　　17.100 18.lectures 19.report 20.economic
　　21.running nose 22.ruining/ spoiling his holiday(s)
　　23.overtired/ too tired 24.prevent the flu/fight off illness
　　25.DDBAC DABCC 35.ACBBCB
　　41.F 42.C 43.G 44.D 45.H 46.I 47.E 48.B 49.J
　　50.BCDCA 55.BADBA 60.BCACD
　　65.DCDC 69-71 BAA 72.CBBD 76.DFCEB
　　81.financial problems
　　82.By dating enough./ Through some essential life experiences.
　　83.Money and education
　　84.we should not get married before we are 25./ we should get married after our mid-20s.
　　putting off marriage until your mid-20s or later.
　　I.Translation
　　1.It is hard/difficult to persuade Tom to give up his idea/opinion.
　　2.Spring is coming and the park is filled with people/ visitors.
　　With the coming of spring,the park is filled with people/ is full of people.
　　As spring is coming/ approach/ approaching has come,the park is crowded/ overcrowded/ packed with people
　　3.Considering the special needs of the athletes,the breakfast is served till/ until ten/ 10 o’clock.
　　4.It is absolutely/ really/ quite necessary to get together with several good friends and relax yourself after a long period of hard work.
　　It is absolutely/ really/ quite necessary to relax yourself by getting together with several good friends after working hard for a long time.
　　5.The abnormal/ unusual climate shows/indicates/ suggests that our living environment is getting worse and worse/ is becoming increasingly worse/ is increasingly worsening,which warns/ reminds us to take action to protect the earth we are living on/our earth.

I.Listening Comprehension
Section A
5 BBADD‖ 10 CDCBA
Section B
11~13 CCD 14~16 CDA
Section C‖
17.digital 18.Mark ‖ 19.‖ Property 20.0809 45233
21.the (school) library 22.Chatting with friends 23.mystery and action 24.application interview
II.Grammar and Vocabulary
Section A
25~29 ABDBC 30~34 BCBAC‖ 35~40 BAADAC
Section B
41~45 HCABD 46~49 FIEG
III.Reading Comprehension Section A
50~54 BDAAB‖ 55~59 DCDAB 60~64 DCABA
Section B
65~68 ADCD 69~71 CBD 72~75 DADC
Section C
76~80 CADFE
Section D
81.commercial pollution … food chain
82.draw people’s attention to the danger / warn people of the danger
83.She published the results of her study./ She made it known to the public.
84.People should eat less sea food./ People should cut down on fish in their diets.
第II卷
I.Translation
1.Simple lifestyle benefits environmental protection.
2.More concern should be shown for the children whose parents are away working in other places.
3.The calmer you are when faced with difficulties,the more likely you are to overcome them.
4.Today many vegetables are grown not in gardens but in greenhouses so that they can be protected from wind,rain or insects.‖
5.He and I share the same views and are similar in age and family background,which I think is the reason why we have become good friends.

感谢您对我的信任,只是我不是这方面的人士,不好做答,只是略抒己见而已,B,一个这样的行政区划的划分,想来人口多寡之因素并不能起到决定性作用,但城市规模有待扩大,却同时解决了包括人口数量增加等等问题,而随着上海的各个方面发展,城市规划也需要一个以上海浦东新区为试验田一样的新模式的城市运作范点,而且事实证明也取得了一定成效,4就是总结了.

解题思路：甲烷燃烧生成了二氧化碳和水，根据反应物、生成物及反应条件，写出反应的方程式；根据化学方程式表示的物质的量之间的关系，可以求出0.5mol甲烷完全燃烧，生成二氧化碳的物质的量．

根据甲烷燃烧生成了二氧化碳和水，写出反应的方程式：CH₄+2O₂

点燃
.
CO₂+2H₂O；由甲烷燃烧的方程式可知，甲烷与生成二氧化碳的物质的量的关系是1：1，所以，0.5mol甲烷完全燃烧，生成二氧化碳的物质的量为0.5mol．
故答为：CH₄+2O₂

点燃
.
CO₂+2H₂O，0.5．

点评：
本题考点： 甲烷、乙醇等常见有机物的性质和用途；书写化学方程式、文字表达式、电离方程式．

考点点评： 本题主要考查了化学方程式的书写及化学方程式的意义，理解化学方程式的意义，并能进行有关的计算．

（1）有利条件：远离市中心，地价较低；水陆运输便利；上海市工业基础好；产业集聚，有规模效益。
不利条件：环境压力较大。
（2）伦敦市工业区：在盛行西风的影响下，工业区集中在城市的东部地区。①功能区：分布在垂直于盛
行风的东北部郊区。

根据甲烷燃烧生成了二氧化碳和水，写出反应的方程式：CH ₄ +2O ₂

点燃
.
CO ₂ +2H ₂ O；由甲烷燃烧的方程式可知，甲烷与生成二氧化碳的物质的量的关系是1：1，所以，0.5mol甲烷完全燃烧，生成二氧化碳的物质的量为0.5mol．
故答为：CH ₄ +2O ₂

点燃
.
CO ₂ +2H ₂ O，0.5．

是什吗题目发来瞧瞧

B

Although he has gone through a lot of the difficulties,he is very confident in his future.
Shanghai Pudong New District sees dramatic changes in the last 20 years.