Junior school students in Harbin.Heilongjiang.had a long weekend ．They had four days off from Oct．19-22．It was not for any festival.but was caused by serious smog．The smog was caused by high level 题目和参考答案——青夏教育精英家教网—

Junior school students in Harbin，Heilongjiang，had a "long weekend"．They had four days off from Oct．19-22．It was not for any festival，but was caused by serious smog．
The smog was caused by high levels of PM 2．5 in the air．
PM 2．5 is small particles（微粒） of pollution in the air with a diameter （直径） of 2．5 micrometers or less．Waste gas from cars and factories is the biggest cause of PM 2．5 pollution． On Oct．17，the World Health Organization named air pollution a cause of cancer．
To better protect children，cities are taking action．
On Oct．21，Harbin Education Bureau decided to close primary and junior high schools for two days．
Beijing started a program on Oct．22 which has a warning system with four levels．The red warning is the highest warning level．It means that the next three days will see serious pollution．
When a red warning is issued（发布），schools will close．
If there's pollution that's not as serious，the Beijing Commission of Education will ask schools to stop PE classes and outdoor activities．
How will students be informed?
"First，the Commission of Education will inform schools online，" Ye Yan，head of Beijing Shijingshanqu Experimental Primary School，told Beijing Times．"Then teachers will text students’ parents．"
Will the days off affect the study plan?
"Missing school days will be made up during the summer or winter vacations，" said Wang Hao，a physical education teacher in Beijing Chaoyang district．
For students in Harbin who had the long weekend，they would go to school on the next two Saturdays．
根据材料内容选出最佳选项，并在答题卡上将该项涂黑。
小题1:Why did students in Harbin have a long weekend?

A．Because the weather was extremely cold．

B．Because a special festival came．

C．Because the winter vacation began．

D．Because there happened serious smog．

小题2:Which of the following is TRUE about PM 2．5?

A．It makes water polluted．

B．People can see it with eyes．

C．It only comes from factories．

D．It can cause serious diseases．

小题3:When a red warning is issued in Beijing，what will happen?

A．All of the work will be stopped．

B．People aren't allowed to go outside．

C．Schools will be closed for a few days．

D．Air pollution will be seen in a few weeks．

小题4:What does the underlined word "text" mean in Chinese?

A．写信

B．发信息

C．写文章

D．发邮件

小题5:What is the reading mainly about?

A．What PM 2．5 is made up of．

B．How people fight against air pollution．

C．What influence the smog brings to school．

D．How schools deal with the missing school days．

小题1:D
小题2:D
小题3:C
小题4:B
小题5:C

试题分析: 本文讲述是某地的学生度过一个很长的周末，其实是受雾霾的影响，一旦发布红色预警，学校就应停课，及采样应采取的措施。
小题1:D 细节理解题。根据第一段提到It was not for any festival，but was caused by serious smog．不是因为节日而是由严重的雾导致的，故选D项。
小题2:D 细节理解题。根据第三段提到Waste gas from cars and factories is the biggest cause of PM 2．5 pollution． On Oct．17，the World Health Organization named air pollution a cause of cancer这种废气来自汽车，工厂，世界卫生组织宣布这种空气污染是致癌的原因，故选D项。
小题3:C 细节理解题。根据第第七段提到When a red warning is issued（发布），schools will close当红色预警时，学校应该关闭。故选C项。
小题4:B 细节推断题。根据第十段提到First，the Commission of Education will inform schools online，" Ye Yan，head of Beijing Shijingshanqu Experimental Primary School，told Beijing Times．"Then teachers will text students’ parents．首先教育部会网上通知学校，老师再通过短信通知学生家长，故选B项。
小题5:C 主旨大意。文中第一句话提到Junior school students in Harbin，Heilongjiang，had a "long weekend"初中的学生有了一个很长的假期，提到雾霾的影响，根据第四段提到To better protect children，cities are taking action为了更好的保护学生，各个城市应采取措施，故可知这是说雾霾对学校的影响，故选C项。

练习册系列答案

68所名校图书小升初高分夺冠真卷系列答案

伴你成长周周练月月测系列答案

小升初金卷导练系列答案

萌齐小升初强化模拟训练系列答案

年级	高中课程	年级	初中课程
高一	高一免费课程推荐！	初一	初一免费课程推荐！
高二	高二免费课程推荐！	初二	初二免费课程推荐！
高三	高三免费课程推荐！	初三	初三免费课程推荐！
更多初中、高中辅导课程推荐,点击进入>>

相关习题

科目：初中英语 来源：不详 题型：阅读理解

In 1926, a Frenchman named Niepce needed pictures for his business. But he was not a good artist. So he invented a very simple camera. He put it in a window of his house and took a picture of his garden. That was the first photo. The next important date in the history of photography was in 1837. That year, Daguerre, another Frenchman, took a picture of his reading room. He used a new kind of camera in a different way. In his picture you could see everything clearly, even the smallest thing. This kind of photo was called a Daguerreotype(银版照相). Soon other people began to use Daguerre’s way. Travelers brought back wonderful photos from all around the world. People took pictures of famous buildings, cities and mountains. In about 1840, photography was developed. Then photographers could take picture of people and moving things. That was not simple. The photographers had to carry a lot of film and other machines. But this did not stop them, for example, some in the US worked so hard. Mathew Brady was a famous American photographer. He took many pictures of great people. The pictures were unusual because they were very lifelike(栩栩如生的). Photography also became one kind of art by the end of the 19^th century. Some photos were not just copies of the real world. They showed feelings, like other kinds of art.
小题1:The first photo taken by Niepce was a picture of _______.

A．his business

B．his house

C．his garden

D．his window

小题2:The Daguerreotype was _______.

A．a Frenchman	B．a kind of picture
C．a kind of camera	D．a photographer

小题3:If a photographer wanted to take pictures of moving things in the year of 1840s, he had to ________.

A．watch lots of films

B．buy an expensive camera

C．stop in most cities

D．take many films and something else with him

小题4:Mathew Brady________.

A．was very lifelike	B．was famous for his unusual pictures
C．was quite strong	D．took many pictures of moving people

小题5:This passage tells us ________.

A．how photography was developed

B．how to show your ideas and feelings in pictures

C．how to take pictures in the world

D．how to use different cameras

查看答案和解析>>

科目：初中英语 来源：不详 题型：阅读理解

阅读短文，按要求完成短文后的各项任务
In the past, man did not have to think about the protection of the environment. There were few people on the earth, and natural resources(资源) seemed to be unlimited(无限的) .
Today things are different, the world has become too crowded. We are using up our natural resources too quickly and at the same time we are polluting our environment with dangerous chemicals (化学制品). If we continue to do this, human life on the ①_______ will ②_______ survive.
Everyone realizes today that if too many fish are taken from rivers and the sea, there will soon be none left. Yet, with modern fishing methods(方法) , more and more fish are caught. We know that if too many trees are cut down, forests will disappear and nothing will grow on the earth. Yet we continue to use bigger and more powerful machines to cut down more and more trees.
We realize that if rivers are polluted with waste products from factories, fish will die. However, in most countries wastes are still put into rivers or the sea, and there are few laws to prevent this. Also, weknow that if the population of the world is becoming larger and larger, in a few years there will not be enough food. What can we do to solve these problems?
If we eat more vegetables and less meat, there will be more food available for everyone.
③Our natural resources will last longer if we learn to recycle(循环再用)them. The world population will not rise so quickly if people use modern methods of birth control.
Finally, if we educate people to think about the problems, we shall have a better and cleaner planet in the future. In a word, it is very important to protect our environment.
小题1:在①、②空白处分别填入一个适当的词使句意完整、上下文通顺。
_____________ ______________
小题2:把③句译成中文。
__________________________________________________ _____
小题3:回答问题: How can we protect fish?
____________________________________________________________________
小题4:在文中找出与There are more and more people in the world.意思相近的句子。
_____________________________________________________________
小题5:在文中找出最能表达该短文主题的句子，并将它写在答题卡上。
__________________________________________________________________

查看答案和解析>>

科目：初中英语 来源：不详 题型：阅读理解

Have you seen Avatar? It’s a popular 3D movie, and you may have to wear a special pair of glasses – 3D glasses, to see it. The 3D glasses make the images from the movie look as if they are coming straight at you.
3D movies are really exciting to watch. More and more 3D movies are coming to theaters. Some say that 3D TV sets will come into our homes in the near future. 3D technology can make TV and movies more exciting. However, people with eye problems may get headaches if they spend too much time watching 3D movies. Why?
When we look at an object, each eye sees it at a different angle (角度). Our eyes send the two images to our brain, and the brain puts them together. 3D technology uses two film projectors (投影机)。 One projects left-eye-image and the other projects a right-eye-image. 3D glasses allow us to see a different image in each eye. So, when we are watching a 3D movie, our brain can’t put together the images sent to our eyes. The brain needs to work harder at “reading” the images. That makes it easier for people with eye problems to get dizzy (头晕的) or have headaches.
Dr John Hagan, an eye doctor in Kansas City, said if your eyes can’t focus on the same object at once, you will have trouble watching 3D movies.
小题1:What is Avatar?

A．It’s a kind of 3D projector.	B．It’s a kind of 3D TV set.
C．It’s a movie.	D．It’s an animal.

小题2:The 3D glasses can make the images from the movie 。

A．look more beautiful than usual

B．look as if they are coming straight at you

C．look as if they are far away from you

D．look more strange than usual

小题3:According to the story, people will have in their homes in the near future.

A．3D computers

B．3D projectors

C．3D phones

D．3D TV sets

小题4:When we look at an object, .

A．each eye sees the object at the same angle

B．each eye sees a different object at the same time

C．our brain puts the two different pictures together

D．there will be two film projectors in our eyes

小题5:If you wear a pair of 3D glasses, .

A．you will see different images in both eyes

B．you will see the same images in both eyes

C．your brain can’t work at all

D．the images can be put together easily by your brain

查看答案和解析>>

科目：初中英语 来源：不详 题型：阅读理解

Fear may be felt in the heart as well as in the head, according to a study that has found a link between the cycles of a beating heart and the chance of someone feeling fear.
Tests on healthy volunteers found that they were more likely to feel a sense of fear at the moment when their hearts are contracting(收缩) and pumping（向---送出） blood around their bodies, compared with the point when the heartbeat is relaxed. Scientists say the results suggest that the heart is able to influence how the brain responds to a fearful event, depending on which point it is at in its regular cycle of contraction and relaxation.
Sarah Garfinkel at the Brighton and Sussex Medical School said: "Our study shows for the first time that the way in which we deal with fear is different depending on when we see fearful pictures in relation to our heart."
The study tested 20 healthy volunteers on their reactions to fear as they were shown pictures of fearful faces. Dr Garfinkel said, "The study showed that fearful faces are better noticed when the heart is pumping than when it is relaxed. So our hearts can also affect what we see and what we don't see - and guide whether we see fear."
To further understand this relationship, the scientists also used a brain scanner(扫描仪) to show how the brain influences the way the heart changes a person's feeling of fear. "We have found an important mechanism by which the heart and brain ‘speak’ to each other to change our feelings and reduce fear," Dr Garfinkel said.
"We hope that by increasing our understanding about how fear is dealt with and ways that it could be reduced, we may be able to develop more successful treatments for anxiety disorders, and also for those for those who may be suffering from serious stress disorder."
小题1:What is the finding of the study?

A．fear has something to do with one's health.

B．fear is a result of one's relaxed heartbeat.

C．One's heart affects how he feels fear.

D．One’s fast heartbeats are likely to cause fear.

小题2:When are people more likely to feel a sense of fear ?

A．When the heartbeat is relaxed.

B．When their hearts are contracting.

C．When people are tired.

D．When people are happy.

小题3:The study was carried out by analyzing （分析）_______.

A．the time volunteers saw fearful pictures and their health conditions

B．volunteers' heartbeats when they saw terrible pictures

C．volunteers' reactions to horrible pictures and data form their brain scans

D．different pictures shown to volunteers and their heart-brain communication

小题4:Which of the following is closest in meaning to "mechanism" in Paragraph 6?

A．Order.

B．Machine.

C．Treatment.

D．System.

小题5:This study may be useful to _______.

A．treating anxiety and stress better

B．explaining the cycle of fear and anxiety

C．finding the sky to the heart-brain communication

D．understanding different fears in our hearts and heads

查看答案和解析>>

科目：初中英语 来源：不详 题型：阅读理解

Do you get enough sleep? With so much homework it's often difficult to get the rest you need. But you need to try， because sleep keeps you healthy and it stops you getting fat.
Recently， a group of US scientists did a study (调查) of kids aged between 8 and 13. The study found that if kids sleep for just one extra (额外的) hour each day, the chance of their getting fat is cut by about 30 percent .
Why? When people don't get enough sleep, they become tired. When they are tired, they don't exercise enough. Also， kids like snacks: If they are awake (醒着的) an extra hour or two each day，they have more time to eat snacks or other unhealthy foods.
So， how much sleep should you get? Scientists suggest 10 to 11 hours a night for kids aged 5 to 12. For older kids, eight to nine hours will do.
小题1:How many reasons are given why people might get fat without enough sleep?

A．3.

B．2.

C．1

D．None.

小题2:If you are under 10， how long do the scientists advice you to sleep?

A．10 to 11 hours.

B．8 to 9 hours.

C．8 to 13 hours.

D．As long as possible.

小题3:Where was the study done by the scientists?
A. In China.        B In Britain.        C. In America.        D. In Japan.
小题4:What does" eight to nine hours will do" mean?
A. Eight to nine hours' sleep will be good and enough.
B Eight to nine hours' sleep will be too long.
C. Eight to nine hours' sleep will help get fat.
D. Eight to nine hours' sleep will help eat snacks and unhealthy foods.
小题5:What does the passage talk about?
A. How to get long sleep.
B How to keep fat.
C. Enough sleep makes people healthy and slim (苗条)
D. Long sleep makes people healthy and slim.

查看答案和解析>>

科目：初中英语 来源：不详 题型：阅读理解

任务型阅读。维生素对人体很重要，大家了解他们吗？请仔细阅读第56-60题中的五种维生素的介绍和A至F材料说明，找出需要补充的维生素的每个人。

	小题1:Vitamin A What can high-vitamin A foods do for you? be great for night vision help you see in color help your grow properly and aids in healthy skin ﹡ vitamin A in carrots helps you see at night
	小题2:The B vitamins What can the B vitamin do for you? help make energy and set it free help make red blood cells which carry oxygen(氧气) throughout your body ﹡ The B vitamins in leafy green vegetables help your body make protein(蛋白质)and energy.
	小题3:Vitamin C What can vitamin C do for you? keep body tissues(组织) in good shape help you heal when you get hurt help your body resist infection ﹡ Vitamin C in oranges helps your body heal if you get a cut
	小题4:Vitamin D What can vitamin D do for you? help keep your bones strong and healthy help keep your teeth strong and healthy help your body absorb the amount of calcium(钙) ﹡ Vitamin D in milk helps your bones and teeth.
	小题5:Vitamin E What can vitamin E do for you? protect your skin from ultraviolet(紫外线) light protect you lungs from becoming damaged by polluted air help make red blood cells ﹡ Sunflowers seeds are the richest in Vitamin E

A．Emily often feels tired and seems to be lack of energy.

B．Jeff spent his summer vacation on the beach and got serious sunburnt.

C．Kate has poor eyesight and she can’t see clearly at night.

D．Tony sometimes feels pains in his bones and he has loose teeth.

E. Luke is so careless that he often gets hurt. And it takes a long time for his wound to heal.
F. Linda feels nervous before the new people.

查看答案和解析>>

科目：初中英语 来源：不详 题型：阅读理解

星期时间	Monday	Tuesday	Wednesday	Thursday	Friday
9:00a.m.	Math		Math		English
10:30a.m.	Chemistry	History	chemistry		chemistry
11:15a.m.					History
1:45p.m.	physics		physics		physics
3:00p.m.		English		math

小题1:What lesson do they have at 1:45 p.m. on Wednesday?

A．Physics

B．Chemistry

C．History

D．Math

小题2:Do they have lessons at 10:30 a.m. on Thursday?

A．Yes, they do	B．No, they don’t
C．We can’t know from the table(表).	D．None of the above.

小题3:On Friday, a physics lesson begins at _______.

A．9:10 a.m.

B．10:30 a.m.

C．1:45 p.m.

D．3:00 p.m.

小题4:When do they have an English lesson?

A．Only on Tuesday	B．Only on Friday
C．On Tuesday and Friday	D．Every day

小题5:How many kinds of lessons do they have in a week?

A．3

B．4

C．5

D．6

查看答案和解析>>

科目：初中英语 来源：不详 题型：阅读理解

No one knows how man learned to make words. Perhaps he began by making sounds like those made by animals. Perhaps he grunted like a pig when he lifted something heavy. Perhaps he made sounds like those he heard all round him—water splashing, bees humming, a stone falling to the ground. Somehow he learned to make words. As the centuries went by, he made more and more new words. This is what we mean by language.
People living in different countries made different kinds of words. Today there are about fifteen hundred different languages in the world. Each containsfour or five hundred thousand words. But we do not need all these. Only a few thousand words are used in everyday life. The words you know are called your vocabulary. You should try to make your vocabulary larger. Read as many books as you can. There are plenty of books written in easy language. Your dictionary is your most useful book.
小题1: What do we mean by language?

A．Sounds made by man.

B．All the words made by man.

C．Different kinds of sound.

D．The way man learns.

小题2: Form the passage we know that long long ago________.

A．no one learned how to make sounds or words

B．animals taught man to learn the language

C．man learned the language by lifting heavy things, falling to the ground,and so on

D．man followed a lot of things in nature to make sounds and words

小题3: What is the number of languages spoken in the world today?

A．500.

B．5,000.

C．1,500.

D．15,000.

小题4:In which sentence can the word "contain(s)" be put so that it is a right one?

A．I________ several dictionaries.	B．Sea water________ salt.
C．A dog _______ four legs.	D．Mr. Smith _____ glasses on his nose.

小题5: Which of the followings is the best if we want to make our vocabulary larger?

A．To read more books.

B．To use the words in everyday life.

C．To use the words in class.

D．To write the words.

查看答案和解析>>

同步练习册答案

练习册

高中

初中

小学