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When an ant dies, other ants take it out of the nest, often within an hour after its death. This behavior interests scientists and they wonder how ants know for sure—and so soon—that another ant is dead.
One scientist recently came up with a way to explain this ant behavior. Dong-Hwan Choe is a biologist, a scientist who studies animals and plants. He found that ants have a chemical on the outside of their bodies that signals to other ants, “I'm dead—take me away” when it is dead.
But there's a question to answer: As we know, if an ant is dead, it stops moving. But when an ant is sleeping or knocked unconscious, it is also not moving. However, other ants don't move the living ant out of the nest. How do they know this ant is not dead? Choe found that ants have another chemical on their bodies, which tells nearby ants something like, “Wait—I'm not dead yet” when it is not dead. Choe suspects that when an ant dies, the chemical that says, “Wait I'm not dead yet” quickly goes away. When other ants detect the “dead” chemical without the “not dead yet” chemical, they move away the body.
To test his theory, Choe and his team put different chemicals on ants. When the scientists used the “I'm dead” chemical, other ants quickly moved the treated ant away. When the scientists used the “Wait—I'm not dead yet” chemical, other ants left the treated ant alone. Choe believes this behavior shows that the “not dead yet” chemical overrides the “dead” chemical when picked up by other ants. And that when an ant dies, the “not dead yet” chemical fades away. Other nearby ants then detect the remaining “dead” chemical and remove the body from the nest.
Understanding this behavior can help scientists figure out how to stop ants from invading new places and causing problems.
What is the function of the first paragraph?

A.Leading the following paragraphs.
B.Showing the main idea of the passage.
C.Introducing the background of the passage.
D.Giving a summary of the passage.

Which of the following has the closest meaning to the underlined word “overrides” in the fourth paragraph?

A.is weaker than B.is stronger than
C.is better than D.is worse than

What can we learn from the passage?

A.Living ants can also be taken away when they are not moving.
B.When an ant dies, it can tell others using a certain chemical.
C.A living ant can pretend to be dead using a special chemical.
D.Ants often use chemicals to communicate with each other.

Which of the following descriptions about Dong-Hwan Choe is right?

A.Choe did this study in order to stop ants from invading new places.
B.Choe is a biologist who is only interested in animals, especially in ants.
C.Choe first came up with an idea to explain this ant behavior,and then did some tests to prove his theory.
D.Choe did the research on this ant behavior on his own

What is mainly discussed in the passage?

A.How to decide whether an ant is dead or not.
B.Why ants have special chemicals on their bodies.
C.reasons for the removable behavior of ants.
D.How ants manage to keep their nests clean.
科目 英语   题型 阅读理解   难度 中等
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Koala bears as pets might be appealing to many of us. However, there are quite a few points to consider even before thinking of adopting one.
Koala bears are one of the most lovely Australian animals. In certain cases where the koala has been raised by hand, they have turned out to be quite affectionate pets. These people tied a piece of fur to a pillow and placed it beside a joey (a baby kola) as a substitute (替代物) for the mother koala. This trick seemed to work well with the baby koala. However, it is a known fact that human handling causes stress to koalas. In my personal opinion, this aspect clouds the fact that koala bears can be tamed (驯服).
In Australia the koala is a priority animal as far as conservation status assessment is concerned. It was hunted to near extinction (灭绝) for its fur. In fact the koala had been wiped out from South Australia in the 1920s. However, rehabilitation efforts have brought the animal back in the state. As for the Australia government, the koala is not a threatened animal, but the US government does list the koala as one.
Although they may live in 40 to 60 kinds of eucalyptus trees, they prefer only 10 to 14 specific kinds. Koalas sleep for most part of the day, which is about 16 to 18 hours, and for most of their waking hours all they do is eat. Koala bears eat the leaves of eucalyptus trees. A full-grown koala can eat almost 2 to 3 pounds of leaves in a day. Despite their slow movements and sweet look, koala bears can be vicious when hungry. Other than this, there are the stress caused to koalas due to human handling and the fights that start in koalas.
Almost everyone finds koalas lovely in the zoo. However, as far as having koala bears as pets is concerned, there are legal issues to consider. Other than that, being able to provide for its diet and habitat is another point that needs some attention before any law legalizing their adoption as pets is passed.
What’s the author’s attitude towards people raising the koala?

A.Optimistic. B.Grateful. C.Cautious. D.Enthusiastic.

Why did Australians hunt the koala?

A.To get its fur. B.To eat its meat. C.To wipe it out. D.To have it for fun.

The underlined word “vicious” in Paragraph 4 probably means __________.

A.fierce and dangerous B.patient and friendly
C.afraid and defensive D.lovely and interesting

It can be inferred from the passage that __________.

A.koala bears tend to live in groups
B.koala bear care can be very demanding
C.koala bears are not particular about their food
D.koala bears are the No. 1 threatened animal in the US

Almost everyone is afraid of something --- snakes, heights, public speaking and so on.
It is normal and can even be helpful to experience fear sometimes. In dangerous situations, fear can keep our bodies alert (警醒的) so that we can act quickly to protect ourselves.
But for some people, fear develops into a “phobia”, which is a strong and unreasonable fear of something. For example, the majority of us feel a little scared when looking down from a tall building. But people with height phobia may have trouble breathing, feel dizzy or turn down a great job just because the company is on the 20th floor.
Phobias can prevent you from living a normal life. “People with spider phobia would stay out of their home or dormitory room for days if they thought a spider was present,” Katherina Hauner, a researcher at Northwestern University, US, told ABC news. This is why scientists have been trying to find a cure for this disease.
Since fear comes from experience --- from what we are told, what we see others experience and what happens to us --- some scientists think if they can “rewrite” these unpleasant memories, they might be able to help people overcome their phobias.
In a study by Hauner and other scientists, participants with spider phobia were asked to first touch a spider with a paintbrush. Seeing that it was not actually dangerous, they then tried touching it while wearing a glove. Finally, they could hold it with their hands.
Certain medicine has also been found to be helpful. Back in 2010, researchers at the University of Hiroshima, Japan, injected (注射) a special medicine into a fish --- who was afraid of light --- to turn off the fear center in its brain. From then on, the fish no longer feared light.
While the search for solutions to phobias is making great progress, it’s an open question whether getting rid of fear is good. Some people want to use these methods to make soldiers fight harder in wars by taking away their sense of fear. Dave Smithson of the charity Anxiety UK thinks that’s a bad idea. “It’s fear that prevents us from doing crazy things,” he says. “There’s a name for people who don’t have fear of consequences: psychopaths (精神变态者).
The main point of the article is to ___________.

A.show us what kind of role fear plays in our lives
B.discuss if it is good to try to get rid of fear
C.inform us of fear and phobia
D.discuss scientific studies related to fear

How does the writer make the meaning of “phobia” clear?

A.By making comparisons. B.By giving examples.
C.By giving data in numbers. D.By giving descriptions.

Which of the following shows the progress scientists have made in finding solutions to phobia?

A.New medicine can shut off fear centers in animal brains whenever needed.
B.They can use phobias to keep our bodies alert so that we can protect ourselves.
C.They can now reduce the pain which is connected with phobia.
D.They have succeeded in helping some people ignore memories related to phobia.

Which of the following would Dave Smithson probably agree with?

A.There is nothing to fear except fear itself.
B.We should not let fear affect our decisions.
C.Fear is not a completely bad thing.
D.Without fear, everyone would be brave.

Much of European train is about efficiency and comfort --- leaving and arriving on time and having a comfortable seat. But the following European trains don’t necessarily offer the fastest journeys --- just the most memorable.

Sweet Switzerland: The Chocolate Train
Route: Montreux to Broc, Switzerland
Time: 9 hours, 45 minutes, roundtrip
www.raileurope.com
This charming train, running in summer and fall, climbs from Montreux overlooking Lake Geneva to the old town of Gruyeres, population 1,600, home to the cheese of the same name. Tour the cheese factory and the local castle, have lunch, then reboard the train and continue on to Broc. There you’ll be bussed to the Cailler-Nestle chocolate factory, lying between Lake Gruyeres and mountains.
Tunnels Galore: The Bernina Express
Route: Chur, Switzerland, to Tirano, Italy
Time: 4 hours, 14 minutes
www.visitflam.com
This train takes on seven-percent inclines (斜坡), 55 tunnels, and 196 bridges --- reaching a height of 7,391 feet and then dropping to 5,905 feet before coming to a stop. It travels through the Alps south from Switzerland’s oldest town to an Italian town of just under 10,000 people.
A Hotel on Wheels: Francisco de Goya
Route: Paris, France, to Madrid, Spain
Time: 13 hours, 30 minutes
www.elipsos.com
Leave Paris in the evening, enjoy a three-course dinner and the increasingly rural scenery, sleep with the rhythm of the rails, and wake the next day as you arrive in Madrid, rested and ready to tour the most populous (人口密集的) city in Europe. First class includes a welcome drink, good dinner, breakfast, and an in-room bathroom with shower.
The Epic Journey: Trans-Siberian Railway
Route: Moscow to Vladivostok, Russia
Time: 19 days
www.trans-siberia.com
This route, a symbol of Russian culture, crosses eight time zones to connect the Russian capital with a port on the Pacific Ocean. On board, poor stay with rich, young with old, foreigners with locals. Social differences disappear as passengers share a unique rail experience.

Travelling from Montreux to Broc on the Chocolate Train, you ____________.

A.will spend about five hours
B.have to go in winter and spring
C.will see a famous chocolate factory
D.can have lunch on the train

Which of the following websites offers more information about Francisco de Goya?

A.www.trans-siberia.com B.www.visitflam.com
C.www.raileurope.com D.www.elipsos.com

Which of the following trains can help you learn about Russian culture?

A.Trans-Siberian Railway. B.The Chocolate Train.
C.Francisco de Goya. D.The Bernina Express.

The passage is most probably taken from a _____________.

A.news report B.book review
C.travel magazine D.geography textbook

The grandfather of Nell Trent owns a shop of odds and ends. He wants to make sure his grandfather is provided for when he dies. His memory of his daughter’s suffering and early death gives him a fear of poverty. Gambling(赌博) becomes an addiction for Nell’s grandfather, which results in his financial and physical ruin. Nell and her grandfather flee from their home and begin a journey that has no destination. For Nell, all she wants is a peaceful existence with enough to live on.
They come across many interesting people on their travels and often meet with the kindness of strangers. Yet, in a colorful world, they also face the reality of the Industrial Revolution. From simple villages and fields of flowers, they go into a dirty city full of mass unemployment and plague (瘟疫) victims --- where children die of starvation and many are abandoned.
The story isn’t only about Nell and her grandfather, but also the people who are connected to them directly or indirectly. There is Richard Swiveller, a careless young man who is a friend of Nell’s older brother, who wants Swiveller to marry Nell for the fortune he thinks she has. Daniel Quilp is a cruel moneylender, who manages to fool the grandfather into borrowing large sums of money from him. There is honest Kit, a boy employed at the shop, who becomes a victim even though he never harms other people. Kit desires to help Nell, whom he considers an angel that has always inspired the best in him. The mysterious Bevis Marks, who is a generous customer to some people and an enemy to others, also has his own reasons for looking after Nell and her grandfather.
Unlike Dickens’ other works, The Old Curiosity Shop is a book of contrasts: the purity of Nell compared to the dishonesty of Quilp, fresh air and scenic villages to the polluted, stone-covered city, etc. Even people’s reaction to the book presented a cruel contrast. At first, Nell Trent was praised and considered Dickens’ best character. Later, she was criticized by many well-known people like Oscar Wilde. While characters in Dickens’ other books are moving towards a better future, Nell and her grandfather are fleeing for their life and their story is moving towards a sad ending.
We can infer from the first two paragraphs that ___________.

A.Nell’s mother died young because of poverty
B.Nell’s grandfather made a fortune by gambling
C.Nell died of starvation during her journey
D.Nell had no one to turn to on her travels

What’s the third paragraph mainly about?

A.The plot (情节) of the story. B.The characters in the story.
C.The background of the story. D.The inspiration behind the story.

The Old Curiosity Shop is different from Dickens’ other works because it ___________.

A.is full of contrasts B.has a surprise ending
C.reflects Dickens’ own life D.is set in the Industrial Revolution

Have you ever wondered: What drives successful people? Take a look around and talk to your friends and seniors who are very successful, you will see all of them have adopted certain values which have proved vital for their success.
It is evident that successful people take initiative (主动性). When they find something needs to be done, they just do it instead of waiting. They believe that responsibility is taken, not given. They weigh immediately what has to be done and then do it with pleasure, thus strengthening their reputation.
Successful people are enthusiastic about the things they do, especially when they believe in what they are doing. They are motivated by their own satisfaction and the joy they get from doing their work. They work hard even when no one is watching and they throw themselves into their work.
They do not fear failure. Failures and disappointments in life are unavoidable. It is failure that teaches us much more than success. Successful people pick themselves up after a fall and try again with more determination and commitment and learn from each failure. They associate with those they can learn from and enjoy the company of those who appreciate their achievement.
Having good IQ often gets a person what he wants but it’s really the EQ that keeps him there and helps him enjoy a high reputation. Successful people are polite to everyone and treat others with respect. By giving respect to others, they command respect for themselves.
Another important quality of successful persons is that they never complain. It’s better to praise others and win favor with them. So instead of complaining about a situation, successful people always try to solve it.
To put it shortly, take initiative and be enthusiastic about them. Do not be afraid to fail, but get up and start again. When you do so, success will be just around the corner.
Title: What Makes People Successful?

Brief introduction
Successful people all have adopted certain values which are(1)__________ for their success.
(2)_________
of successful people
Taking initiative
◆They take immediate action without hesitation.
◆They take responsibility for what has to be done and do it(3)__________.
Being self-motivated
◆They’re enthusiastic about the things they do with a(4)_______ in what they are doing.
◆They devote themselves to their work.
(5)__________ from failure
◆They get up and start again after a failure.
◆They keep company of those (6)__________ their achievement.
Giving respect to others
◆They are polite to everyone and treat others respectfully.
◆They earn respect in (7)_________ by giving respect to others.
Making no(8)________
◆They praise others and win favor with them.
◆They always try to find any possible(9)__________ to the difficult situation.
Summary
When you can combine the above into your action plan, you’ll have(10)___________ to success soon.

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