Smog is a kind of air pollution. It makes the sky look grey and dirty, and its air pollutants come from many kinds of natural and manmade sources.Smog is a big problem for our daily life. In smog weat 题目和参考答案——青夏教育精英家教网—

Cats’ sense of smell is very important to their health. Many cat owners have seen a cat smell the food and refuses it. Careful sniffing tells the cat if something is safe to eat.

Cats have a pair of vomeronasal organs(犁鼻器) on the roof of the mouth. When the cat wants to sniff, she will breathe the air in through her mouth. At this moment, she will often squint(斜视) her eyes and maybe even flatten(使…平坦) her ears. This makes her look like she is making faces. The vomeronasal organs will then analyze the smell---almost as if the cat is tasting the smell.
When you come home from outside the house, your cat can smell what you had for lunch and for a mid-afternoon snack. She can smell the people you shook hands with and your neighbour you stopped to talk to and hug. She can smell the grass brought under your shoes as you took a shortcut across the lawn. Your cat’s sense of smell is so good that she can smell difference between a gallon of water with a teaspoon of salt in it and plain water. In comparison, we think of salt as completely tasteless.
Cats have scent glands(臭腺) on each side of the forehead, on the chin, the lips and next to the tail. When your cat rubs up against your hand, your leg, the sofa, and your bed, she is leaving her scent in those things. She will then use her sense of smell to recognize “her” things, people and even other pets in the home.
If you want to have fun with your cat’s sense of smell, take some small bits of different things, such as a bit of chicken, some flowers and some fish. Place each different scent under a piece of paper towel(so your cat cannot see any of them) and encourage your cat to investigate and find what kind of food she likes to eat best.
小题1:Cats know whether the food is fit to eat or not with their____________.

A．sense of touch

B．scent glands

C．organs of smell

D．sense of taste

小题2:The third paragraph was written mainly to prove that _____________.

A．cats are very smart

B．cats have a good sense as dogs

C．salty water has a special smell

D．cats’ sense of smell is excellent

小题3:What does your cat do when it rubs against your foot?

A．She puts her scent on it.

B．She shows respect to you.

C．She asks you to play with her.

D．She smells where you were just now.

小题4:What does the word “investigate” mean in the last paragraph?

小题5:The passage mainly tells us _________________.

A．cats are one of our best friends

B．cats have sharp sense of smell

C．sense of smell is very important

D．cats know if something is safe to eat

London used to be “foggy” for the same reason that cities like Beijing or Chongqing are “foggy” today. The “fog” was in fact smog, a mixture of smoke and fog. In other words, it was made by air pollution. In London, some of this pollution came from factories, but much of it came from the coal (煤) that people burnt in their houses to keep warm during the winter. By the 1950s, London’s smog problem had become so bad that the government decided to do something to clean the air. A new law was made and nobody could burn coal in any British city. Within a few years, the air became much cleaner. There were no more “pea-soupers”.
Many Chinese cities now face the same sort of problem with air pollution that London faced 40 or 50 years ago. However, this problem is more difficult for Chinese cities to solve. One reason is that more of the pollution comes from the factories, rather than from coal burnt in people’s houses. If these factories were closed, this would harm the economy and lots of people would lose their jobs. Another reason is that changing from coal to cleaner fuel (燃料), like gas, is quite expensive.
However, the air in many Chinese cities is becoming cleaner and cleaner, as the government and people pay more and more attention to cutting down pollution. As a result, there are fewer “pea-soupers” in Beijing than there used to be.
小题1:What was the main reason for air pollution in London?

A．There was too much smoke in the sky.

B．There were too many factories in the city.

C．People burnt too much coal in the houses.

D．The city was too big for the cleaners to clean.

小题2:How did the air in London become much cleaner?

A．There was not so much fog in the winter later.

B．A law was made to keep people from burning coal in their houses.

C．Many factories in the city were closed.

D．People paid more attention to cleaning their city.

小题3:What does the underlined word “pea-soupers” refer to?

小题4:The problem of air pollution is more difficult for Chinese cities to solve because of _____ reasons.

小题5:Which sentence is NOT true?

A．Air pollution is serious in Beijing and Chongqing.

B．Using coal is much more expensive than using gas.

C．Factories made much more pollution in China.

D．The reasons of air pollution in London and Beijing are different.

What makes us who we are? This question has two different answers. One is the environment that surrounds us when we grow up, and the other is our genes (基因). In English, this is called the “nature vs nurture debate(辩论)”. Nature means genes, and nurture means environment, including the people around you.
There is a famous saying: “Give me a child until the age of 7 and I’ll show you the man.” Now, there is a scientific research to support this famous saying.
They watched small birds in new environments, and wrote down how much they explored(探索). Birds that grew up with very outgoing birds were more outgoing themselves. Scientists at the universities of Exeter, UK and Hamburg, Germany did studies on birds. They found that their personalities（个性） were affected most by the birds around them when they grew up – more so than genes.
Nick Royle from the University of Exeter in the UK said the research was surprising because it shows that “for these birds, personality is mainly determined（决定） by environment.” However, human personalities are a lot more complicated than birds, so there is much we still don’t know. The nature vs nurture debate will continue for a long time, if not forever.
小题1:The famous saying in the passage tells us _________.
A.A 7-year-old boy can do things as well as an adult.
B.An adult can be influenced and changed by a 7-year-old boy.
C.The environment in the early part of our life has the biggest influence on our adult life.
小题2:Nick Royle is a(n) ______ scientist.
A. American B. British C. German
小题3:What do the scientists think of the research?
A. Outgoing. B. Exciting. C. Surprising.
小题4:What does the underlined word “complicated” mean?
A. 有趣的 B. 类似的 C. 复杂的
小题5:Which is NOT TRUE according to the passage?
A. The environment and genes affect our personality.
B. The scientists are sure that the environment influences the human personality more than the genes do.
C. The nurture means the environment .

Plants are flowering faster than scientists predicted（预测）in reaction to climate change, which could have long damaging effects on food chains and ecosystems.
Global warming is having a great effect on hundreds of plant and animal species around the world, changing some living patterns, scientists say.
Increased carbon dioxide（CO2）in the air from burning coal and oil can have an effect on how plants produce oxygen, while higher temperatures and changeable rainfall patterns can change their patterns of growth.
“Predicting species’ reaction to climate change is a major challenge in ecology,” said the researches of several U.S. universities. They said plants had been the key object of study because their reaction to climate change could have an effect on food chains and ecosystem services.
The study, published on the Nature website, uses the findings from plant life cycle studies and experiments across four continents and 1,634 species. It found that some experiments had underestimated（低估）the speed of flowering by 8.5 times and leafing by 4 times.
“Across all species, the experiments under-predicted the speed of the advance — for both leafing and flowering — that results from temperature increases,” the study said.
The design of future experiments may need to be improved to better predict how plants will react to climate change, it said.
Plants are necessary for life on the Earth. They are the base of the food chain, using photosynthesis（光合作用）to produce sugar from carbon dioxide and water. They let out oxygen which is needed by nearly every organism on the planet.
Scientists believe the world’s average temperature has risen by about 0.8℃since 1900, and nearly 0.2℃ every ten years since 1979.
So far, efforts to cut emissions（排放）of planet-warming greenhouse gases are not seen as enough to prevent the Earth heating up beyond 2℃ this century — a point scientists say will bring the danger of a changeable climate in which weather extremes are common, leading to drought, floods, crop failures and rising sea levels.
小题1:What is the key information the author wants to give in Paragraph 1?

A．Plants’ reaction to weather could have damaging effects on ecosystem.

B．The increasing speed of flowering is beyond scientists’ expectation.

C．Climate change leads to the change of food production patterns.

D．Food chains have been seriously damaged because of weather.

小题2:We can learn from the study published on the Nature website that ______.

A．plants’ flowering is 8.5 times faster than leafing

B．there are 1,634 plant species on the four continents

C．scientists should improve the design of the experiments

D．the experiments failed to predict how plants react to climate change

小题3:Scientists pay special attention to the study of plants because _______.

A．they can prove the climate change clearly

B．they are very important in the food chains

C．they play a leading role in reducing global warming

D．they are growing and flowering much faster than before

小题4:What can be inferred from the last two paragraphs about the world’s temperature?

A．It has risen nearly 0.2℃ since 1979.

B．Its change will lead to weather extremes.

C．It is 0.8℃ higher in 1979 than that of 1990.

D．It needs to be controlled within 2℃ in this century.

Did you know that you can help the environment if you buy recyclable products instead of non-recyclable ones? Look for the recycle s 小题1: —— three arrows that make a circle – on the package. Recyclable products are usually made out of things that already have been u 小题2:. It usually takes less energy to make recycled products than to make new ones. The more energy we save, the b 小题3:.

Imagine that it's a hot summer day. You put an ice cream on the sidewalk, and it melts. W小题4: does this happen? Well, you probably know that the sun causes the ice cream to melt. But you may not know that the sun produces solar energy. Solar energy is a 小题5: way of saying "energy that comes from the sun." Solar energy can be used to heat homes, buildings, water, a 小题6:__ make electricity. Today, more than 200,000 houses in the United States make use of the s 小题7:energy.
　　Cars are an important part of life for most people. But cars also cause pollution and give out a lot of greenhouse gases into the air. L 小题8:, there are some cars that are better for the environment. These cars can travel longer on a smaller amount of gasoline. They don't p小题9: much, either. Using these kinds of cars can help reduce the amount of greenhouse gases in the air.
Many things, l 小题10: computers, TVs, stereos, and VCRs, have special labels on them. The label says "Energy" and has a picture of a star. Products with the ENERGY STAR® label are made to save energy. Buying products with ENERGY STAR® labels will help protect the environment.

短文填空先通读下面的短文，掌握其大意，然后根据短文内容和所给首字母，          在空格内填入一个适当的词，使短文意思完整。所填单词在答题卷上必须完整写出。 (本大题共5分，每格0.5分)
There are many ways to find a job. It can be as easy as w  小题1:  into a neighborhood shop to look at its announcement(通知) board. Local shops often have a  小题2:  where people can put small signs telling what kind of service they need or can provide. Such services include c  小题3:  for children or cleaning houses.
Or, job searchers can look in the newspaper. Local newspapers have employment（招聘） announcements placed by companies looking for workers.
Another p  小题4:  tool for finding jobs is the Internet. For example, people in four hundred and fifty cities around the world can use the Craigslist Web site to buy things, meet people or find a job. Craigslist says that it r  小题5:  two million new job listings each month.
Another useful way to find a job is t  小题6:  a college or university. For example, students at the University of Texas in Austin can go to the Career Exploration Center to get help in finding a job. Of course, looking for a job r  小题7:  knowing what kind of work you want to do. For example, there is a book called “What Color is Your Parachute?” by Richard Bolles. This book has been helping people c  小题8:  a career since it was first published(出版) in nineteen seventy.
Some experts also help people find jobs. Susan W. Miller o  小题9:  a company called California Career Services in Los Angeles. She says her company helps people find jobs by first helping them understand their strengths, goals and i  小题10:. Then she provides them with methods and resources(资源) to help them find the right job.

We know mosquitoes very well. Mosquitoes fly everywhere. They can be found almost all over the world, and there are more than 2,500 kinds of them.
No one likes mosquito. But the mosquito may decide if she loves you. She? Yes, she. The male(雄性) mosquito doesn’t bite! Only the female（雌性）mosquito bites because she needs blood（血）to lay eggs. She is always looking for things or people she wants to bite. If she likes what she finds, she bites. But if she doesn’t like your blood, she will turn to someone else for more delicious blood. Next time a mosquito bites you, just remember you are chosen. You’re different from others!
If the mosquito likes you, she lands on your body without letting you know. She bites you so quickly quietly that you may not feel anything different. After she bites , you will have an itch(痒) on your body because she puts something from her mouth together with your blood. When the itch begins, she has flown away.
And then what happens? Well, after her delicious dinner, the mosquito feels tired. She wants to find a place to have a good rest. There, in a tree or on a wall, she begins to lay eggs, hundreds of eggs.
根据短文内容，判断下列句子正误。正确为“T”，错误为“F”，并在答题卡上把“T”或“F”涂黑。
小题1:Mosquitoes means “蚊子” in Chinese.
小题2:All mosquitoes like to bite people for blood.
小题3:If a mosquito wants to bite you, it means she is very tired.
小题4:The mosquito bites you too quickly to let you know.
小题5:The itch begins after the mosquito flies away.

Tom and Fred are talking about the year 2020. “What will our world be like in the year 2020?” asks Tom.
“I don’t know,” says Fred.
“What do you think?” asks Tom.
“Well, no one knows, but it’s interesting to guess,” says Fred.
“In the year 2020 everyone will carry a pocket computer. The computer will give people the answer to all their problem. We will have telephones in our pockets, too, and we will be able to talk to our friends,” says Tom.
“A lot of people will live and work under the sea. Machines will do most of the work, and so people will have more holidays. They will be able to fly to the moon by spaceship and spend their holidays there,” says Fred.
“And I hope I will be able to live under the sea,” says Tom. “Won’t that be very interesting? Just like a fish.”
小题1:Tom and Fred are talking about _______.

A．their school life	B．some interesting information
C．their life now	D．their life in the future

小题2:Machines will do _______ of the work.

小题3:In 2020, we’ll talk to friends at all times and everywhere, because we’ll have ______.

小题4:Tom says _______.

A．he likes fish very much

B．he’d like to live under the sea like a fish.

C．he will go fishing under the sea.

D．he will spend holidays on the moon.

小题5: Which of the following is NOT mentioned?

A．People will be able to fly to the moon in a spaceship.

B．People will have more holidays.

C．Many people will live and work under the sea.

D．People will build farms under the sea.

试题分类