北京模拟考试c试题答案

下面是小编为大家准备的北京模拟考试c试题答案，本文共9篇，欢迎阅读借鉴。

篇1：北京模拟考试c试题答案

步骤/方法

1：雨天在高速公路行车，为避免发生“水滑”现象而造成方向失控，应保持较低的车速。

A。正确 B。错误

正确答案是：A

2：伤员大腿、小腿和脊椎骨折时，一般应就地固定，不要随便移动伤者。

A。正确 B。错误

正确答案是：A

3：不得在车门、车厢没有关好时行车。

A。正确 B。错误

正确答案是：A

4：车辆在冰雪路面紧急制动时，易产生侧滑，应降低车速，利用发动机制动进行减速。

A。正确 B错误

正确答案是：A

5：伤员上肢或小腿出血，且没有骨折和关节损伤时，可采用_____止血。

A。止血带止血法

B。加压包扎止血法

C。屈肢加垫止血法

D。压迫止血法

正确答案是：C

6：机动车从匝道驶入高速公路，应当开启_____，在不妨碍已在高速公路内的机动车正常行驶的情况下驶入车道

A。左转向灯

B。右转向灯

C。危险报警闪光灯

D。前照灯

正确答案是：A

7：高速公路同方向有2条车道的，左侧车道的'最低车速为每小时_____。

A。60公里

B。80公里

C。90公里

D。100公里

正确答案是：D

8：自动挡汽车的“2”挡在_____时使用。

A。缓坡行驶

B。停车

C。正常行驶

D。超车

正确答案是：A

9：下坡中途停车时，踏制动踏板要_____。

A。比在平路时提前

B。比在平路时推迟

C。和平路时一样

D。比在平路时轻

正确答案是：A

10：机动车驾驶人_____车辆。

A。在没有交通信号时可以任意驾驶

B。应当依法、安全和文明驾驶

C。在没有交通警察时可随意驾驶

D。可按照自己的习惯驾驶

正确答案是：B

11：对驾驶拼装的机动车上道路行驶的驾驶人，处200元以上元以下罚款，并_____。

A。拘留驾驶人

B。吊销驾驶证

C。注销行驶证

D。驾驶人记12分

正确答案是：B

12：驾驶人发现轮胎漏气时，应迅速制动减速，将车辆尽快驶离行车道，停放在路边安全地点。

A。正确

B。错误

正确答案是：B

13：狂风袭来，可能会使行驶中的车辆产生横向偏移。

A。正确

B。错误

正确答案是：A

14：车辆在高速公路意外碰撞护栏时，有效的保护措施是_____。

A。握紧转向盘，适当修正

B。向相反方向大幅度转向

C。迅速向碰撞一侧转向

D。迅速采取紧急制动

正确答案是：A

篇2：C语言笔试题答案

(1)下述关于数据库系统的叙述中正确的是________。

A)数据库系统减少了数据冗余

B)数据库系统避免了一切冗余

C)数据库系统中数据的一致性是指数据类型的一致

D)数据库系统比文件系统能管理更多的数据

答案：A

评析：由数据的共享自身又可极大地减少数据冗余性，不仅减少了不必要的存储空间，更为重要的是可以避免数据的不一致性。所谓数据的一致性是指在系统中同一数据的不同出现应保持相同的值。

(2)关系表中的每一横行称为一个________。

A)元组 B)字段 C)属性 D)码

答案：A

评析：在关系数据库中，关系模型采用二维表来表示，简称“表”。二维表是由表框架及表元组组成。在表框架中，按行可以存放数据，每行数据称为元组。

(3)数据库设计包括两个方面的设计内容，它们是________。

A)概念设计和逻辑设计 B)模式设计和内模式设计

C)内模式设计和物理设计 D)结构特性设计和行为特性设计

答案：A

评析：数据库设计可分为概念设计与逻辑设计。概念设计的目的是分析数据间内在语义关联，在此基础上建立一个数据的抽象模型。逻辑设计的主要工作是将ER图转换为指定的RDBMS中的关系模型。

(4)请读程序：

#include

main

{

int a;float b，c;

scanf(“%2d%3P%4f’,&a,&b,&C);

printf(”\na=%d，b=%ec。%f\n”，a，b，C);

}

若运行时从键盘上输入9876543210l，则上面程序的输出结果是________。

A)a=98,b=765,c=432 1

B)a=1 0,b=432,c=8765

C)a=98,b=765.000000,c=432 1.000000

D)a=98,b=765.0,c=432 1.0

答案：C

评析：scanf把用户从键盘录入的数字的第1、2位存入整型变量a;把第3、4、5位存入单精度实型变量b，把第6、7、8、9位存入单精度实型变量c，用户录入的第10位被scanf遗弃。这时变量a、b、c的值分别为：98、765.000000、4321.000000。

(5)一个良好的算法由下面的基本结构组成，但不包括__________。

A)顺序结构 B)选择结构 C)循环结构 D)跳转结构

答案：D

评析：1966年，Bohra和Jacopini提出了以下三种基本结构，用这三种基本结构作为表示一个良好算法的基本单元：1、顺序结构;2、选择结构;3、循环结构。

(6)请选出以下程序的输出结果________。

#include

sub(x,y,z)

int x,y,*z：

{*z=y-x;}

main{

int a,b,c;

sub(10，5，&a);sub(7，a，&b);sub(a，b，&C);

printf(”%d，%d，%d\n”，a，b，C);

}

A)5,2,3 B)-5，-12,-7 C)-5，-12,-17 D)5,-2,-7

答案：B

评析：sub函数的作用是将形参y和x的差赋给了z指向的那个内存地址，所以在sub(10,5,&a/I，10和5属于值传递，a是属于地址传递，也就是a与z指向了同一个存储单元，在执行函数后，a的值随*z变化，所以此次函数被调用后，a的值为y-x=-5，同理可知，在sub(7,a,&b)后，b的值发生变化，其值为-5-7=-12，在sub(a,b,&C)后，c的值发生变化，其值为-12-(-5)=-7。

(7)下面程序在屏幕上的输出是________。

main

{

printf(”ab\b\b c”);

}

A)ab\b\b c B)a c C)abc D)ab c

答案：B

评析：c语言中允许使用一种特殊形式的字符常量，、就是以一个“”开头的字符序列，这样的字符称为“转义字符”。常用的转义字符有：\n，换行;\t，水平制表;\b，退格;\r，回车。

(8)若x是整型变量，pb是基类型为整型的指针变量，则正确的赋值表达式是_______。

A)pb=&x; B)pb=x; C)*pb=&x; D)*pb=

答案：A

评析：选项A将变量x的地址赋给指针变量pb，使pb指向x‘选项B是将x的值当作地址赋给指针pb，Db指向一个地址等于x值的内存单元;选项c将x的地址赋给指针pb指向的地址等于x的内存单元。

(9)设整型数i=5，则printf(“%d”，i+++++i);的输出为________。

A)10 B)1l C)12 D)语法错误

答案：D

评析：c语言中有基本的算术运算符(+、-、*、/)还包括自增自减运算符(++、–)，在c语言解析表达式时，它总是进行贪婪咀嚼，这样，该表达式就被解析为i++ ++ +i，显然该表达式不合c语言语法。

(10)若要用下面的程序片段使指针变量p指向一个存储整型变量的动态存储单元

int *p;

p=___________malloc(sizeof(im));

则应填入__________。

A)int B)int C)(*int) D)(int*)

答案：D

评析：不论p是指向什么类型的指针变量，都可以通过强制类型转换的方法使之类型一致，强制类型转换的格式为(数据类型+)。

(11)下面程序输出的结果是__________。

main

{

int i=5,J=9，x;

x=(I==j?i：(j=7));

printf(”\n%d，%d”，I,J);

}

A)5,7 B)5,5 C)语法错误 D)7,5

答案：A

评析：条件表达式的一般形式为：表达式I?表达式2：表达式3;先求解表达式1，若为真则求解表达式2;若表达式l的值为假，则求解表达式3。本题中先判断i==j，不等，执行j=7;然后执行x=7。故本题为A。

篇3：职称英语考试理工类C级试题答案

第二篇

Too Late to Regret It

When I was a junior， I met a second-year student in my department. He wasn#39;t tall or good-looking， but he was very nice， attractive and athletic. He had something that I admired very much. He was natural， warm， and sincere.

I disregarded （不顾） my parents#39; disapproval. We were very happy together. He picked me up from my dorm every morning， and after class we would sit alongside the stream that ran through campus， or sunbathe （晒太阳） on the lawn. At night he would walk me back to my dorm. He came from a poor family， but in order to make me happy， he borrowed money from his friend to buy presents and meals for me. Our fellow students looked up to him as a role model， and the girls envied （妒忌） me. He wasn#39;t a local， but wanted to stay here after graduation. I thought we had a future together.

However， when I got a part-time job during the summer vacation， people began giving me a lot of pressure， saying that a pretty， intelligent girl like me should find a better guy to spend time with. This was also what my family thought. He spent the summer in his hometown， so I was all by myself. When he got back， I began finding fault with him. But his big heart and warmth soon drove all unpleasant thoughts away. However， I had no idea how badly I had hurt him and that things would get worse.

I had a good part-time job off campus that paid pretty well. With my good performance at school， I also got admission to graduate school at one of China#39;s best universities. He， on the other hand， did not do so well at school or at work. I had to worry about his living expenses， job and scores.

Almost all my colleagues and friends advised me to break up with him. Then we had a quarrel last June~ He was in great pain， and my cold words and bad moods started turning him away.

Graduation time was drawing near， and he said he wanted to go back to his hometown. He said that he couldn#39;t put up with me anymore. I was shocked and looked at him in despair.

True love happens only once， but I found it out too late.

36 When did the author fall in love with the boy？

A.After she had a quarrel with him.

B.When she was a junior.

C.When she was a second-year student.

D.After she found a part-time job.

37 What did he do to make her happy？

A.He studied much harder.

B.He often took her for a ride.

C.He always endured her insults.

D.He often bought her presents and meals.

38 Who advised her to break up with him？

A.His parents.

B.Her teachers.

C.Her colleagues and friends.

D.Their fellow students.

39 Why did he leave her？

A.Because he could no longer bear her.

B.Because he hated her.

C.Because his parents needed taking care of

D.Because he wasn#39;t a local.

40 Upon learning that he would leave her， she was

A.very happy.

B.extremely joyful.

C.quite relieved.

D.in great pain.

第三篇

Recycling Around the World

Recycling is one of the best environmental success stories of the late 20th century. But we could do more. People must not see recycling as fashionable， but essential.

The Japanese are very good at recycling because they live in a crowded country~

They do not have much space. They do not want to share their limited space with rubbish

But even so， Tokyo area alone is estimated to have three million tons of leftover rubbish at present.

In ， the United States recycled and composted （制成肥料） 57 million tons of waste （27% of the nation#39;s solid waste）。 This is 57 million tons of waste which did not go into landfills and incinerators （焚化炉）。 In doing this， 7，000 rubbish collection programmes and recycling centres helped the authorities.

In Rockford， a city in Illinois， US， its officials choose one house each week and check its garbage （废物）。 If the garbage does not contain an newspapers or aluminium （铝） cans， then the resident of the house gets a prize of at least $1，000.

In Japan， certain cities give children weekly supplies of tissue paper and toilet paper in exchange for a weekly collection of newspapers.

In one year Britain recycles：

・ 1 out of every 3 newspapers.

・ 1 out of every 4 glass bottles and jars （罐子）。

・ 1 out of every 4 items of clothing.

・ 1 out of every 3 aluminium drink cans.

In ， Hong Kong transported 1.3 million tons of waste to mainland China for recycling. Around 535，000 tons of waste were recycled in Hong Kong itself.

Over half the things we throw away could be recycled. That means we could recycle

10 times as much as we do now.

However， recycling needs a lot of organisation and special equipment. Also， there is not much use for some recycled material.

41 Which of the following is NOT true of the Japanese？

A.They have recycled all their waste.

B.They live in a crowded country.

C.They are very good at recycling.

D.They have to share their limited space with rubbish.

42 How much waste did the US recycle in 1996？

A.1.3 million tons.

B.27 million tons.

C.53 million tons.

D.57 million tons.

43 Where can people get a big prize for contributing to recycling？

A.Tokyo.

B.Rockford.

C.Hong Kong.

D.London.

44 In Japan， the newspapers collected by children

A.are given to poor people.

B.are used as reading materials.

C.are recycled.

D.are used as prizes.

45 Which of the following is NOT true of Britain？

A.It recycles 1 out of every 3 newspapers each year.

B.It recycles 1 out of every 4 glass bottles and jars each year

C.It recycles 1 Out of every 4 items of clothing each year.

D.It recycles 1 out of every 3 aluminium cans each year.

篇4：职称英语考试理工类C级试题答案

第3部分：概括大意与完成句子（第23～30题，每 题1分，共8分）

下面的短文后有2项测试任务：（1）第23～26题要求从所给的6个选项中为第2～5段每段1选择个最佳标题；（2）第27～30题要求从所给的6个选项中为每个句子确定1个最佳选项。

Teach Your Child Science

1 It is important to make your child interested in science from an early age. Most young children ask a lot of questions and you should give careful scientific answers. Don#39;t only give facts， but try to give explanations as well.

2 Science is not just knowledge； it is a way of thinking， a method of finding out about the world. We see something. We try to explain it， and we test our idea by setting up an experiment. One day you come home and find the plant on the table has fallen over. You think it might be the wind from the open window or the cat， so you close the window， but leave the cat in and see what happens （you can also try leaving the window open and shutting the cat out）。 Of course， you remember there may be a third explanation.

3 Ask your child to get a piece of string， some salt， a glass of water and an ice cube （冰块）。 Tell her to put the ice in the water， and then put one end of the string on the ice， leaving the other end over the side of the glass. Put a little salt on the ice. Wait a minute， and then pull the string； it should be attached to the ice. Ask the child： “what has happened？”

4 Probably she won#39;t know. Ask her whether fresh water or salt water freezes into ice first. If you live near the sea and have a cold winter， she should know fresh water freezes first as she will have seen that happen. Show her how to test the idea by half-filling two paper cups with water， adding salt to one. Then put them in the icebox and check every three minutes. Write the results in a table. The conclusion will be that salt changes the behaviour of water. #39;Thinking about the string， we see the salt turned some of the ice into water. Then the salt went away into the water and the ice froze again leaving the string attached.

5 Then you can ask， “Will water with salt boil at the same temperature as water without salt？” She can think， tell you her idea and （taking care because of the heat） you can test it in the kitchen.

23 Paragraph 1 .

24 Paragraph 2 .

25 Paragraph 3 .

26 Paragraph 4 .

A.What exactly is science？

B.How do you find an explanation？

C.What topics do you need？

D.How do you answer your child#39;s questions？

E.Where does your child study science？

F.How do you set up the experiment on salt and water？

27 When your child asks you questions， you should give her 。

28 We set up experiments to test our ideas about 。

29 In the experiment， one end of the string was attached to 。

30 The experiment shows that salt changes the behaviour of 。

A.the icebox

B.the ice

C.scientific answers

D.the experiment

E.the world

F.water

第4部分：阅读理解（第31～45题，每题3分，共45分）

下面有3篇短文后有5道题。请根据短文内容，为每题定1个最佳选项。

The Clock That Wake You When You Are Ready

Are you a real grump （脾气坏的人） in the mornings？ Do you wake up every day feeling tired， angry and upset， and all too ready to flit the snooze （瞌睡） button？ If so， then a new alarm clock could be just for you.

The clock， called SleepSmart， measures your sleep cycle， and waits for you to be in your lightest phase of sleep before waking you up， Its makers say that should ensure you wake up feeling refreshed （恢复精力） every morning.

As you sleep you pass through a sequence of sleep states - light sleep， deep sleep and REM sleep （快速眼动睡眼） - that repeats approximately every 90 minutes. The points in that cycle at which you wake can affect how you feel later， and may even have a greater impact than how long or little you have slept. Being wakened during a light phase means you are more likely to wake up cheerful and full of life and interest.

SleepSmart records the distinct pattern of brain waves produced during each phase of sleep， via a headband equipped with electrodes （电极） and a microprocessor. This measures electric activity of the wearer#39;s brain， and communicates wirelessly with a clock unit near the bed. You program the clock with the latest time at which you want to be wakened， and it then at the proper time wakes you during the last light sleep phase before that.

The concept was invented by a group of students at Brown University in Rhode

Island after a friend complained of waking up tired and performing poorly on a test. “As sleep-deprived （剥夺） people ourselves， we started thinking of what to do about it，” says Eric Shashoua， a recent college graduate and now chief executive officer of Axon Sleep Research Laboratories， a company created by the students to develop their idea. They have almost finished a prototype and plan to market the product by next year.

31 SleepSmart is a clock that

A.enables you to go to sleep.

B.enables you to sleep deeply.

C.enables you to get up early.

D.wakes you up during your last light sleep phase

32 As you sleep， the headband

A.analyses your sleep cycle every 90 minutes.

B.records the time when you fall into deep sleep.

Cmunicates wirelessly with a computer，

D.measures the electric activity of your brain.

33 What should the sleeper do to make the device work？

A.He should press the snooze button in time，

B.He should turn on the microprocessor in the clock.

C.He should set the latest time for waking up.

D.He should adjust his headband.

34 The idea of making such a clock was developed by a group of

A.students at Brown University.

B.teachers at Brown University.

C.sleep-deprived scientists.

D.former engineers at Axon Sleep Research Laboratories.

35 The word “prototype” （paragraph 5） means

A.“form”。

B.“model”。

C.“brand”。

D.“cycle”。

篇5：职称英语考试理工类C级试题答案

应考人员注意事项

1.本试卷代码为“111”，请将此代码填涂在答题卡“试卷代码”相应的栏目内；否则，无法评分。

2.请将工作单位、姓名、准考证号分别填写在试卷和答题卡相应的位置上。

3.全卷65题，连续编号，共100分。请按题号在答题卡上将所选 选 项对应的字母用2B铅笔涂黑。

在试卷上作答无效。

第1部分：词汇选项（第1～15题，每 题1分，共15分）

下面每个句子中均有1个词或短语划有底横线，请为每处划线部分确定1个意义最为接近选项。

1 She was close to success.

A.fast

B.quick

C.near

D.tight

2 The two girls look alike.

A.beautiful

B.similar

C.pretty

D.attractive

3 The boy is intelligent

A.clever

B.naughty

C.difficult

D.active

4 Everybody was glad to see Mary back.

A.sorry

B.sad

C.angry

D.happy

5 What is your goal in life？

A.plan

B.aim

C.arrangement

D.idea

6 Jack was dismissed.

A.fired

B.fined

C.exhausted

D.criticized

7 John is crazy about pop music

A.sorry

B.mad

C.concerned

D.worried

8 It is the movement not the color， of objects that excites the bull.

A.frightens

B.scares

C.arouses

D.confuses

9 It is highly unlikely that she will arrive today

A.probably

B.very

C.hardly

D.possibly

10 I am feeling a lot more healthy than I was

A.many

B.no

C.much

D.some

11 Since ancient times people have found various ways to preserve meat

A.eat

B.cook

C.freeze

D.keep

12 We packed up the things we had accumulated （积累） over the last three years and left.

A.late

B.recent

C.past

D.final

13 The expedition reached the summit at 10：30 that morning

A.bottom of the mountain

B.foot of the mountain

C.top of the mountain

D.starting point

14 There is always excitement at the Olympic Games when an athlete breaks a previous record of performance

A.beats

B.destroys

C.maintains

D.defends

15 The president proposed that we should bring the meeting to a close.

A.stated

B.said

C.suggested

D.announced

第2部分：阅读判断（第16～22题，每题1分，共7分）

下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断：如果该句提 供的是正确信息，请选择A；如果该句提供的是错误信息，请选择B；如果该句的信息文中没有提及，请选择C。

Earthquake

How does an earthquake start？

What makes an earthquake happen？ The rock of the earth#39;s crust （地壳） may have a

#39;fault#39;， a kind of break in the surface. The blocks which make up the earth move， and sometimes this may cause the sides of the fault to move up and down or lengthways （纵向地） against each other. When one piece of rock starts to rub on another with great force， a lot of energy is used. “l-his energy is changed into vibrations （振动） and it is these vibrations that we feel as an earthquake. The vibrations can travel thousands of kilometers and so an earthquake in Turkey may be felt in Greece.

What to do during an earthquake？

At school

As soon as the earthquake starts， students should get under the desks immediately and wait until the teacher tells them it is safe to come out. The teacher should， at the same time， go immediately to the teacher#39;s desk， get underneath （在……下面） it and stay there till the danger is over. Students must not argue with the teacher or question instructions.

As soon as the tremors （震动） stop， all students should walk towards the exit and go straight to the school playground or any open space such as a square or a park. They must wait there until the teacher tells them it is sale to go.

At home

If you are at home when the earthquake occurs， get immediately under the table in the living room or kitchen. Choose the biggest and strongest table you can find. You must not go anywhere near the window and don#39;t go out onto the balcony （阳台）。 Once the tremors have stopped， you can come out from under the table， but you must leave the building straight away. You should walk down the stairs and should not use the lift - there may be a power cut as a result of the earthquake and you could find yourself trapped inside the lift for hours.

In the street

If you are in the street when the earthquake takes place， do not stand near buildings， fences or walls - move away as quickly as possible and try to find a large open space to wait in. Standing under trees could also be dangerous.

16 People knew long ago how an earthquake starts

A.Right

B.Wrong

C.Not mentioned

17 Thousands of people were killed during an earthquake in Turkey.

A.Right

B.Wrong

C.Not mentioned

18 As soon as an earthquake occurs， students should leave the building

A.Right

B.Wrong

C.Not mentioned

19 Students should go to the school playground or an open space once the tremors stop.

A.Right

B.Wrong

C.Not mentioned

20 If you are at home when an earthquake occurs， stand near a big table

A.Right

B.Wrong

C.Not mentioned

21 The best way to leave the building during an earthquake is to get into a lift

A.Right

B.Wrong

C.Not mentioned

22 If you are in the street when an earthquake occurs， stay in a large open space

A.Right

B.Wrong

C.Not mentioned

篇6：北京高考理科数学试题答案解析

每年的高考都会格外受到大家的瞩目，今年也不例外。从这样一份题目中，我们可以看出怎样的命题特征，在将来备战高考的过程中，我们又应该注意什么?本文将结合考题，为大家做出分析。

第一，整体难度较去年略有下降，注重对基础知识和基础概念的考查。

这主要表现为大部分题目都是学生在日常训练中会见到的，学生在备考的过程中如果能踏踏实实认真对待每个常规题目，就能在这份试卷中有不俗的表现。

例如第15题三角函数的考查了这类题最常见的二倍角公式和辅助角公式结合，得到正弦型函数考查周期性和最值，相比往年曾经考过的单调性，这个题会让学生深感心安。

第17题的立体几何题虽然含有一个参数，给学生的计算增加了复杂度，但是相比往年题目中对于存在性的考查，这道题还是常规了许多。

这份试卷中的小题大多数也是非常典型的题目，秉承北京考题一向不喜好“偏难怪”的特点，考查到了学生基本概念的掌握。学而思高考研究中心建议大家在备战未来高考的时候，一定要多注重基础题型。

第二，注重对知识本质理解的考查。

例如第16题继续在离散型随机变量的题目中，考查学生对数字特征的直观理解，并连续第四年要求不必证明、直接给出结论。如果学生在备考这类题目中只注重计算而不注重理解概念的本质原理，就会无从下手。

同样的，第6题对数列的考察的也是如此，学生可能背下很多公式，但是考试的时候并没有考查具体数列的计算和求值，只考查了对等差数列中首项、公差、通项关系的认识，是一个非常好的题目。

第三，试卷在平稳中有创新，让人眼前一亮。

例如今年第9题首次加入了二项式定理的考查，这是北京卷新课六年以来的首次考查，会让一部分同学感到意外，但是本题也秉承了北京新考点首次出现难度低的一贯特点，并没有难为学生。

今年的第18题导数题，一共设置了三问对学生进行考查，跟以往也略有不同，但是相比较往年的高考题，这道题的考查也比较常规。

今年的第20题压轴题跟以往风格也有所不同，题目并没有难为学生概念的新定义，而更侧重考查学生观察数列各项之间的内在联系，虽然第三问并没有像去年一样不要求学生证明结论，但是前两问的难度比去年有大幅度的下降，如果学生在前面的时间把握较好，也完全有可能解出最后一问。

总体来说，这是一份学生容易上手，能考查出学生真正能力、设计有区分度的考卷，有利于学生正常发挥水平。

篇7：-学年北京171中学初三上期中英语试题答案

单项填空部分

21. 正确答案D。此题考查数量不定代词。much后接不可数名词。

22. 正确答案C。此题考查名词所有格。时间可+ ’s，two hous是复数，s结尾，只保留’，表示‘二个小时的.车程’。

23. 正确答案D。此题考查疑问代词、副词。根据句子情境，搭配why最恰当。

24. 正确答案A。此题考查不定代词。the others，也是正确答案。

25. 正确答案C。此题考查冠词。语境所指具体的双方皆知的那本书，选定冠词the。

26. 正确答案C。此题考查从句时态。问句的宾语从句有未来时间next sunday提示；答句中If引导一般将来时，从句一般现在时。

请下载附件：《-北京171中学初三（上）期中英语试题答案》    本地下载

篇8：高考英语北京卷单选试题答案及难点解析

2011高考英语北京卷单选试题答案及难点解析

21答案 D

考点 考察时态和语态，首先考虑语态，主语experiment与位于conduct构成动宾关系，谓语使用被动形式。题干中出现the second war是过去的时间点，before the second war是过去的过去，因此使用过去完成时。

22答案 B

考点 考察名词性从句中的主语从句。主语从句中缺少offer的宾语，选择what。

23答案 C

考点 考察时态，题干中出现明显的.over the last three months，用于现在完成进行时或现在完成时。

24答案 D

句意

考点 考察情态动词，题干中的he wasn't certain说明他可能不来，可能来，因此使用不完全否定，might not.

26答案 B

考点 考察非限定性定语从句。逗号后的非限定性定语从句中缺少主语，选择which。

27答案 C

考点 考察时态，题干中must have done是对过去的肯定推测，因此提示时间在过去，选择一般过去时。

28答案 A

考点 考察虚拟，题干中出现always，从句虚拟使用一般过去时

30答案C

考点 考察虚拟，if引导的从句是对过去的虚拟，因此使用过去完成时。

31答案B

考点 考察名词性从句中的宾语从句，宾语从句中缺少修饰terrible的程度副词，选择how，译为“多么”

32答案B

考点 考察时态，时态Bob已经去了加利福尼亚，说你他离开的动作发生在过去，因此使用一般过去时。

(责任编辑：唐悦芝)

篇9：春节放鞭炮北京五环内只允许放C、D级烟花爆竹

据介绍，根据《烟花爆竹安全与质量》国家标准中给烟花爆竹的四级分类，本市制定了允许销售和燃放的烟花爆竹规格标准：原则上本市五环路以内只允许燃放C、D级烟花爆竹。适应于室外大的开放空间,燃放时距离产品及燃放轨迹25米以上不受伤害的B级组合烟花和二踢脚只供五环路外的燃放点燃放，全市禁止群众燃放适于由专业燃放人员在特定条件下燃放的A级烟花爆竹。适应于室外相对开放空间或近距离燃放,燃放时距离产品及其燃放轨迹5米以上或1米以上的C、D级烟花爆竹等可以在五环路以内燃放。

配送车辆装备GPS系统

今年的烟花爆竹将采用专购、专储、专运、专销的'管理办法。北京市供销合作总社将负责统一组织采购货源，并设立符合安全条件的储藏仓库，统一储存采购的烟花爆竹。同时，市供销合作总社将设立烟花爆竹配送调度中心，并配备安装GPS定位系统的危险物品运输车辆，由押运人员负责将烟花爆竹配送到销售网点，禁止销售网点自行提货和大量储存。

春节前5天五环路内开售

对于烟花爆竹的销售网点，市安监局将统一制定设置销售网点的安全条件，统一对外公布。各区县政府、公安、工商等部门将合理布局，销售网点由工商部门核发临时营业执照，最后由市供销合作总社组织对经许可网点实施配送。五环路以内销售烟花爆竹的开始时间为春节前五天。本市将在确保安全的前提下，让市民能够方便地买到质优价廉的烟花爆竹，防止给伪劣、非法、超标产品留出市场空间。

烟花爆竹带防伪标签

为了防止非法、伪劣、超标烟花爆竹流入本市，公安、交通部门还将负责堵住外省市不合格烟花爆竹流入的渠道，工商、城管等部门大力查处销售、储存非法、伪劣、超标烟花爆竹的行为。一经查出将被吊销销售许可证，三年内不得经营烟花爆竹。

除此之外，今年由供销合作总社采购的烟花爆竹将统一在内外包装上贴上防伪标。防伪标的真假由市供销合作总社认定。对不合格的一律收缴，并由市烟花办组织销毁。