题目内容

The street is beautiful, for there are trees on ________.

A. neither side B. either side

C. both side D. all sides

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Sharks have lived in the oceans for over 450 million years. There are now about 360 species of sharks, whose size, behavior, and other characteristics differ widely.

Sharks range in size from the 0.1 meter long dwarf-dog shark to the 18-metre long whale shark — the world’s biggest fish. The whale shark, like two other large shark species — the basking shark and the megamouth shark — are harmless to people because they feed on plants and small aquatic animals.

Sharks have extremely sensitive sense organs. Some sharks can detect the scent(气味) of decaying fish or blood even when it is diluted(稀释) to only one part per million parts of seawater. They can probably hear underwater sounds that originate as far as 3 kilometers away and can tell the direction from which underwater sounds are coming.

Sharks are key predators(肉食动物) in the world’s oceans, helping control the numbers of many other ocean predators. Without sharks, the oceans would be overcrowded with dead and dying fish.

Every year, we catch and kill over 100 million sharks, mostly for food and for their fins. Dried shark fins are used to make shark fin soup, which makes a profit for the sellers. Other sharks are killed for sport and out of fear. Sharks are vulnerable to overfishing because it takes most species 10 to 15 years to begin reproducing and they produce only a few offspring.

Influenced by movies and popular novels, most people see sharks as people-eating monsters. This is far from the truth. Every year, a few types of sharks injure about 100 people worldwide and kill about 25. Most attacks are by great white sharks, which often feed on sea lions and other marine mammals. They sometimes mistake human swimmers for their normal prey, especially if they are wearing black wet suits.

If you are a typical ocean-goer, your chances of being killed by an unprovoked(无缘无故的) attack by a shark are about 1 in 100 million. You are more likely to be killed by a pig than by a shark.

Sharks help save human lives. In addition to providing people with food, they are helping us learn how to fight cancer, bacteria and viruses. Sharks are very healthy and have aging processes similar to ours. Their highly effective immune system allows wounds to heal quickly without becoming infected, and their blood is being studied in connection with AIDS research.

Sharks are among the few animals in the world that almost never get cancer and eye cataracts. Understanding why can help us improve human health. Chemicals extracted from shark cartilage(软骨) have killed cancerous tumors in laboratory animals, and these chemicals may someday help prolong our life.

Sharks are needed in the world’s ocean ecosystems. Although they don’t need us, we need them. We are much more dangerous to sharks than they are to us. For every shark that bites a person, we kill one million sharks.

1.Which statement best expresses the main idea of the article?

A. There are many different species of sharks, but only a few of them are dangerous to humans.

B. Sharks are important to the ocean ecosystem and they are a valuable resource for humans.

C. Although some sharks are dangerous to humans, they can help save human lives.

D. Sharks always eat small fishes and they are an essential part of the world’s oceans.

2.Which question is NOT answered in the article?

A. How long does a shark live?

B. How many people are killed by sharks each year?

C. Why are sharks important in medical research?

D. What do humans kill sharks for?

3.It can be inferred from the passage that ______________.

A. movies have given people the wrong impression of sharks

B. most sharks are dangerous to humans

C. sharks will attack anyone who is wearing black

D. it is very likely that ocean-goers will be killed by a shark

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Are you too old for fairy tales? If you think 1. , Copenhagen is sure to change your mind.

See the city first from the water. In the harbor sits Denmark’s best?known landmark: the Little Mermaid. Remember her? She left the world of the Sea in search of a human soul in one of Andersen’s popular 2. (fantasy). From the harbor you can get a feel for the 3. (attraction) “city of green spires”. At dawn or in cloudy weather, the spires of old castles and churches lend the city a dream?like atmosphere. You’ll think you’ve stepped into a watercolor painting.

Churches and castles are almost all that are left over in the original city. Copenhagen became 4. capital of Denmark in 1445. During the late 16th century, trade grew, and so did the city. But fires in 1728 and 1795 5. (terrible) destroyed the old wooden structures. Much of what we see today 6. (date) from the 19th and early 20th centuries.

Copenhagen was the first city 7. (declare) a street for pedestrians only. The city has the 8. (little) traffic noise and pollution among European capitals. 9. you’re from, you can come to dance, dine, and take in outdoor and indoor concerts. Even without money, you can still enjoy the proud old trees, the colored night lights and the beautiful gardens. You might feel as if you 10. (be) in a fairy tale.

—You speak very good French!

—Thanks. I ________ French in Sichuan University for four years.

A. studied B. study

C. was studying D. had studied

I was about to go to bed ________ there was a knock at the door.

A. while B. when C. as D. suddenly

The New York Times’ Room for Debate blog has a panel (专门小组) considering the pluses and minuses of summer homework. This has been the subject of debate in our house. Our 11th-grade daughter’s summer assignments were very challenging, to the point where I sometimes wondered if more of her time would have been better spent just riding a bicycle or swimming around a pool.

Here are some opinions from the panel:

Harris Cooper, psychologist, Duke University: “The long summer vacation disrupts the rhythm of instruction, leads to forgetting and requires time be spent reviewing old material when students return to school in the fall. My advice? Teachers, you need to be careful about what and how much summer homework you assign. Summer homework shouldn’t be expected to overcome a student’s learning deficits; that’s what summer school is for. Parents, if the assignments are clear and reasonable, support the teachers.”

Nancy Kalish, co-author of the Case Against Homework: “Schools should rethink summer homework, and not just because it stresses out kids (and parents). The truth is, homework doesn’t accomplish what we assume it does. According to a Duke University review of more than 175 studies, there is little or no connection between homework and standardized test score or long-term achievement in primary school.”

Mark Bauerlein, professor of English at Emory University: “To the general question of whether or not schools should assign summer homework, the answer is ‘Yes.’ The reason comes not only from the brain drain of summer. It relates also to an attitude young people take toward education. They tie knowledge to the syllabus, not to themselves. They read and study to write the paper and score highly in the test, not to furnish their minds. In a word, they regard learning as a classroom thing. That’s all.”

It seems to me that summer homework is a good idea to keep the brain cells moving, but like everything else it should be given in moderation.

1.Harris Cooper seems to believe that ________.

A. more summer homework causes students’ learning difficulties

B. students should go to summer school if they have no homework

C. teachers should give careful consideration to summer homework

D. parents should tell teachers how much homework their kids need

2.In the 4th paragraph, Nancy Kalish explains her idea by________.

A. making comparisons B. giving research findings

C. raising questions D. telling stories

3.Mark Bauerlein might agree that summer homework ________.

A. should be based on the school’s teaching program

B. has no direct connection to students’ higher grades

C. brings more pressure to both students and their parents

D. helps students develop the right attitude toward learning

I’ve often wondered how exactly sleep, or lack of it, can have such an awful effect on our bodies and, guess what, how much we sleep switches good genes(基因) on and had genes off.

In the first half of 2013, the Sleep Research Centre at the University of Surrey found a direct link between hours spent sleeping and genes. Every cell in our bodies carries genetic instructions in our DNA that act as a kind of operating handbook. However, each cell only “reads” the part of this handbook it needs at any given moment.

Can sleep affect how a gene reads instructions? It’s a question asked by Professor Derk-Jan Dijk at the University of Surrey. He set up an experiment and asked his volunteers to spend a week sleeping around seven and a half hours to eight hours a night and the next sleeping six and a half to seven hours.

Blood samples were taken each week to compare which genes in blood cells were being used during the long and short nights. The results were rather surprising. Several hundred genes changed in the amount they were being used, including some that are linked to heart disease, cancer, and Type 2 diabetes. Genes to do with cell repair and replacement were used much less.

Sleep restriction(six and a half to seven hours a night) changed 380 genes. Of these, 220 genes were down regulated (their power was increased). Those affected included body-clock genes which are linked to diabetes(糖尿病). One of the most downgraded genes is that which has a role in controlling insulin(胰岛素) and is linked to diabetes and insomnia(失眠). The most upgraded gene is linked to heart disease.

So changing sleep by tiny amounts can upgrade or downgrade genes that can influence our health and the diseases we suffer from when we sleep too little.

The important message is that getting close to eight hours of sleep a night can make a dramatic difference to our health in just a few days through the way it looks after our genes.

1.What kind of relation is directly discussed in the passage?

A. Sleeping hours and changes of genes.

B. Sleeping hours and diseases.

C. Changes of genes and diseases.

D. Genes and health.

2.What can we learn about Professor Derk-Jan Kijk’s experiment?

A. The experiment was carried out to find the answer to how genes affect sleep.

B. The experiment took a period of more than two weeks to reach a conclusion.

C. His volunteers were divided into two groups with two different sleeping patterns.

D. Blood samples of the volunteers were checked afterwards to decide how many genes changed in sleeping.

3.Which of the following may be concluded from the passage?

A. The experiment was performed at the University of Surrey in early 2013.

B. Body-clock genes are associated with heart disease, cancer and Type 2 diabetes.

C. Sleep restrictions may contribute to disease like diabetes, insomnia, and heart disease.

D. 7.5－8 hours’ sleep pattern makes little difference compared with 6.5－7 hours’ sleep pattern.

4.Which of the following can be inferred from the findings of the sleep research?

A. When there is a sleep restriction, genes to do with cell repair and replacement function less.

B. In a sleep, several hundred genes change in the amount. The more changes, the worse results.

C. When genes are up regulated, they do good to health; when genes are down regulated , they do harm to health.

D. Eight hours of sleep a day can be beneficial to our health in that it looks after our genes.

阅读理解。

Hong Kong, a city of seven million—and growing fast. By the year 2050 Hong Kong’s population will almost double. Where will these people live?

There’s only one place to go—up. Fast forward 50 years．This is the tallest man-made structure on the planet. Its name：Millennium Tower. It would stand twice as tall as anything built before. Over 60 thousand people would live or work here. Millennium’s designers think it represents the best solution for the coming population explosion.

It would cost ten billion dollars and consume more building materials than any single nation could produce. David Nelson, one of Millennium’s key designers, said：“It would be a massive project and a world project. But to actually realize it, resources would have to come from all over the globe. The challenge and the motivation for doing it would be to realize one of the world’s largest and most complex construction projects.”

Millennium would be more complex than anything ever built. So its builders won’t know for sure the building is safe until it’s up, and they can’t afford to make an error. Massive earthquakes have brought down entire cities in this part of the world. Can Millennium’s designers make it immune to these quakes of the earth?

For Millennium, like all the other buildings, safety is just one concern among many. It will need to be a home, one that welcomes people in. Getting people into the building and making sure they have a great experience well be what makes Millennium successful, but how to do it? For the design team, the secret was to bring all the elements of city life within. Cafes and restaurants, theatres and stores would provide entertainment. Health clubs, even schools and medical clinics would also serve the towers’ residents.

Millennium’s designers have proven something. Things that seem impossible today, might just become reality tomorrow. The engineering problems have, for the most part, already been solved. Our achievements are limited only by our imaginations.

1.Why did the designers decide to build Millennium?

A．Because they wanted to build the world’s most complex building.

B．Because Hong Kong’s population will greatly increase.

C．Because Hong Kong is developing fast as an international city.

D．Because it can bring huge profit after it is put to use.

2.What is TRUE about the project?

A．It will be completed in the year 2050.

B．It can accommodate all the residents in Hong Kong.

C．It is designed by designers from all over the globe.

D．It has to be strong enough to stand earthquakes.

3.The success of Millennium mainly relies on _______.

A．how many resources will be used

B．how many nations will work together

C．whether people can enjoy their life in it

D．whether it is safe for people to live in

4.How does the writer develop this passage?

A．By providing descriptions. B．By using figures.

C．By giving examples. D．By analyzing causes.

He is _____ his lesson _____ the final exam.

A. preparing; to B. preparing; for

C. ready; to D. ready; for

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