For centuries, elephants have played a big ro...

For centuries, elephants have played a big role in the world's economies, culture and religion. The African elephant used to be found all over Africa and the Asian elephant moved from Syria to China to Indonesia. Nowadays, elephants are found in small groups in the south of the Sahara Desert and scarcely in Southeast Asia, Sri Lanka and India.

In the early twentieth century, there were close to ten million elephants, and now the elephant number is as low as 252,000 and expected to drop down to 160,000 by 2025. Between 2007 and 2014, the elephant population fell by at least 30%, or 144,000 elephants. As researchers have traveled over the African plains, they only spotted one herd of 36 elephants in an area like the size of Mexico. It is clear that these gentle mammals are disappearing right before our eyes.

There are many reasons why the elephant population has been decreasing, one of which is their habitat. Humans are competing with elephants for living space, and as more and more humans clear the land that is being used by elephants, the elephants have less space. Elephant hunting or "poaching" has been a major factor for the disappearance of this species, and they are killed only for their valuable ivory tusks. Although the trade of tusks is illegal, it is still a common practice in many places.

Often, all the local people living among elephants would be farmers, and found that they could make more money by selling the tusks of one elephant, than doing manual labor for twelve years. That alone makes it really hard to prevent them from killing the elephants.

Some places such as Botswana, have put in extra effort to protect their wildlife from poachers by founding their Botswana Defense Force, which is made up of around 700 specially-trained soldiers that are stationed in 40 different areas. You may feel worried about the present situations elephants are in, but there are ways to help. To find out how you can help elephant conservation, adopt an elephant, or donate, click here.

1.The numbers listed in Paragraph 2 show that　　 .

A. humans don't care for elephants　　 B. elephants have been next to extinction

C. elephants have become gentler than before　　 D. elephants have gained more attention

2.What is the biggest factor for the disappearing elephants?

A. Less space.　　 B. A lack of food.

C. Suffering from a disease.　　 D. Elephant hunting.

3.Why is it hard to ban killing the elephants among the farmers?

A. Their tusks are profitable.

B. Elephants are destroying their fields cruelly.

C. Farmers hope to make a living by selling their meat.

D. Farmers practice their hunting skills by killing elephants.

4.What is the purpose of this text?

A. To persuade readers to make a donation.

B. To guide readers how to protect elephants.

C. To encourage readers to help protect elephants.

D. To introduce the decreasing number of elephants.

高三英语阅读理解中等难度题查看答案及解析

Bees play a vital role in the world. Unfortunately, bees are dying by the second.

The main purpose of bees is to make honey. Honey, shockingly, does not exist for human consumption, it is essential to the insects. Honeybees store honey in their hives (蜂巢) in order for the bees to have energy for their flight muscles and for heating the hive during the winter period. They collect pollen (花粉) which supplies protein for young bees to grow.

According to Honey, com, the increased production and quality of agricultural crops as a result of honey bee pollination is valued &t more than1 $14/ 6 billion per year. These insects are responsible for over 70 of the fruits and vegetables we eat today, including apples, grapes, coffee, beans, and broccoli.

So if they are so valuable to agriculture, why do they keep dying off? A key suspect seems to be pesticides (农药). Honeybees who are exposed to pesticides result in the damage to their neurological (神经的) functions, specifically memory or behavior. And that's why the majority of worker bees disappear and leave behind a queen, plenty of food and a few nurse bees to care for the remaining immature bees and the queen. There are several other causes to the decline of bees, including the destruction of natural habitat, like woodlands, forests, and other habitats for bees. Climate change is also a factor in the decline of the wild bee population.

Actually, there are a variety of methods to help the bee population grow. One way is to start your own organic garden by planting bee-friendly plants. Pesticides are used in both industrial practices and even in your home, so it is best to find organic seeds and weed killers.

1.Why do honeybees store honey in their hives?

A. To provide enough honey for human to consume.

B. To draw protein out of honey for young bees.

C. To help attract other insects and make hives stronger.

D. To strengthen bee muscles and heat hives in winter.

2.Apples and beans are mentioned in the third paragraph to show that _.

A. bees supply human beings with basic food

B. bees mainly live on these agricultural crops

C. bees are of great importance to fruits and vegetables

D. bees can bring in more money for famers every year

3.What is most likely to cause the worker bees to leave their hives behind?

A. The lack of food.

B. The abuse of pesticides.

C. The fighting among bees.

D. The destruction of the habitats.

4.What would the author probably discuss in the paragraph that follows?

A. Another way to save bees.

B. Other tips for choosing seeds.

C. More methods to plant green organic fruits.

D. Causes of the decline in the wild bee population.

高三英语阅读理解困难题查看答案及解析

In many parts of the world cars play an essential role in daily life and many societies would stop to function without them. So the claim that in 20 years’ time no one will own cars may be hard to believe. But this is the prediction made by a team of transport researchers who are taken seriously not only by governments but also by car manufacturers.

The Human Science and Advanced Technology Institute at Loughborough in the UK is part of an international research program. The team there believes that by 2020 all cars will be computerized, which will mean extremely large fuel savings, no accidents and better use of roads. The super-intelligent car of the 21st century will drive itself and it will not be owned by on individual. Instead, we will have a choice of cars and change them as frequently as we change our clothing.

According to Dr. David Davis, who leads the research team, these predictions are based on the rising cost of the car culture ,which had blocked up our cities, polluted our air and caused more deaths than both world wars put together.

Davis says cars will be fitted with intelligent cruise control devices to regulate the distance between one car and another. Brakes and accelerators (加速器) will become redundant（多余的） because the car will automatically speed up or slow down to match the speed of the car in front. Computers are much safer drivers than people, so cars in a road train will be able to drive much closer together than cars driven by people.

By 2010 Dr. David Davis believes car technology will give motorists a clear view of the road whatever the weather conditions by projecting an image of the road ahead onto the car’s windscreen. And by 2020 cars will travel in convoy linked to each other electronically. Cars will be connected by an electronic tow(牵引) bar to the car in front to form “road-trains”. “The front vehicle in such a train burns the ordinary fuel” says Davis. “But all the others in the train would burn about ten percent of the normal amount and so produce about ten percent of the pollution.

1.We know from the passage that governments and car manufactures ________.

A. don’t believe the prediction that no one will own cars by 2020.

B. are devoted to the technological innovation (创新) in car industry.

C. consider the predictions made by the researchers seriously.

D. have put the super-intelligent car into mass production.

2.Which of the following will NOT be the characteristics of the cars of 2020 ?

A. There will be no brake and accelerator in cars.

B. We will own as many cars as we want .

C. All cars will be driven by computers.

D. Car accident will no longer happen.

3.The expression closest in meaning to the underlined phrase “ in convoy”(Para 5) is ______.

A. in line B. sidelong C. side by side D. next to one another

4.What will happen if cars are linked to each other electronically in 2020 ?

A. Motorists will get a clear view of the road.

B. The weather conditions won’t have effect on motorists.

C. There will be a decrease in the pollution caused by car .

D.All trains will burn less fuel than present.

高三英语阅读理解中等难度题查看答案及解析

Today APEC is playing a more important role in the world stage，______ purpose is to promote economic cooperation in the Asia-Pacific area．

A．where　　 B．whose　　 C．when　　 D．Which

高三英语单项填空中等难度题查看答案及解析

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。其中有两项为多余选项。

In many parts of the world, cars play an important role in daily life and many societies would not exist without them. 1. But this is the prediction made by a team of transport researchers who are taken seriously, not only by government but also by car manufacturers(制造商).

The Human Science and Advanced Technology Institute at Loughborough in the UK is part of an international research program. 2. That will mean much saving, no accidents and better use of roads.The super-intelligent car of the 21st century will drive itself, 　 3..Instead, we will have a choice of cars and change them as frequently as we change our clothing.

According to Dr.David Davis, who leads the research team, these predictions are based on the rising cost of the car culture, which had blocked up our cities, polluted our air, and caused more deaths than both world wars put together.

Davis says, cars will be fitted with some intelligent devices(装置) to regulate(调节) the distance between one car and another.　 4. Computers are much safer drivers than people, so cars in a road train will be able to drive much closer together than cars driven by people.

By 2010, Dr.David Davis believes, car technology will give motorists a clear view of the road, whatever the weather conditions, by projecting an image（影像）of the road ahead on to the car’s windscreen.　 5. 　 Cars will be connected by an electronic bar to the car in front to form “road-trains”.“The front vehicle in such a train burns the normal amount of fuel.” says Davis.“ But all the others in the train would burn about ten percent of the normal amount, and so produce about ten percent of the pollution.”

A.The team there believes that by 2030 all cars will be computerized.

B.They believe that cars will become more important in 20 years.

C.And it will not be owned by one individual.

D.And by 2030, cars will travel in line, linked to each other electronically.

E.So the idea that in 20 years’ time, no one will own cars may be hard to believe.

F.Every driver will use less fuel in the car he owns.

G.The car will automatically speed up, or slow down, to match the speed of the car in front.

高三英语信息匹配中等难度题查看答案及解析

语法填空

Over the centuries, there have been a few people who plan the future of the world for a living and they 1. (call) futurologists.

Hundreds of futurologists will gather at Newcastle University to hold a seminar about the future. Many people will attend the seminar with dreams of starting new enterprises 2. (base) on the predictions they will hear. I clicked 3. the websites of a few futurologists and got several predictions.

4. (short), computers will become handier. Then all of us can use our voices to control computers such as downloading files 5. updating computers just by saying a few words. By 2015, garments will have been made of new materials that will remain stainless 6. you spill on them, and they will never get old and worn. By 2025, there will have been no 7. (starve), no people who have to live on welfare, no discrimination, no conflict and people 8. (live) in peace and equality. By 2030, tiny, insect-like robots may be sent around the cells of our bodies 9. (assess) our health , which will have made it possible for us to live for at least 150 years. By 2050, we will be linking our brains to the much 10. (smart) computers and a huge database9 and a new type of electronic human might have developed!

高三英语语法填空中等难度题查看答案及解析

In ____late 19th century, Europe changed ______great deal and was playing important roles in ______international trade.

A. the; a; the     B. the; the; 不填     C. the; a; the      D. the; a; 不填

高三英语单项填空困难题查看答案及解析

Scientists have long understood the key role that oceans play in regulating the Earth’s climate. Oceans cover 70 percent of the globe and store a thousand times more heat than the atmosphere does. What’s newer is the understanding of how this key component of our climate system responds to global warming.

A brake on global warming — for now

One of oceans’most important climate functions is absorbing heat and carbon dioxide (CO2), one of the gases that cause global warming. Acting as a heat sponge (海绵), oceans have absorbed huge amounts of heat and CO2 in the last forty years.

Fujita explains that "oceans are saving us from faster climate change — they are a big flywheel that delays rapid overheating of the Earth, putting a brake on the climate system."

"That’s the good news," he adds. "The bad news is that oceans only slow the atmospheric warming. Once oceans come to balance with a greenhouse gas warmed earth, the extreme heat will remain in the atmosphere and things will get much hotter." But where and how oceans release this accumulated (积累的) heat is uncertain. And as oceans store heat, fragile underwater ecosystems are struggling.

The most recent scientific report from the Intergovernmental Panel on Climate Change (IPCC) also notes with concern that oceans are acidifying because of increased absorption of atmospheric CO2, and thus causing a threat for shell-forming species. Sharp increases in carbon dioxide levels will cause further acidification of oceans.

Currents distributing heat

Another important role oceans play is that of distributor. Oceans deliver heat and life-sustaining nutrients around the globe. Just as blood vessels bring oxygen and nutrients to cells in the human body, oceans’ currents carry oxygen, nutrients and heat throughout the Earth. Oceans distribute 25 percent to 50 percent of the energy the planet receives from the sun. For example, the Gulf Stream carries heat across the Atlantic. This warm current gives northwestern Europe a milder climate than it would normally have so far north. A change to oceans’ circulation (循环) patterns could throw Europe into a colder period, even as the rest of world experiences warmer temperatures.

1.We can infer from the passage that 　　 .

A.oceans cause global warming

B.oceans stop global warming

C.oceans release nutrients and heat

D.ocean ecosystems face more dangers

2.From the passage we can learn that oceans’ currents 　　 .

A.produce oxygen and nutrients everywhere

B.absorb 25% to 50% of the energy from the sun

C.distribute heat and nutrients around the globe

D.change oceans’ circulation patterns

3.Which of the following is NOT the result of oceans absorbing heat and carbon dioxide?

A.It causes further acidification.

B.It affects shell-forming species.

C.It makes the atmosphere hotter.

D.It regulates the Earth’s climate.

4.This passage mainly talks about 　　 .

A.the roles of oceans B.global warming

C.ocean currents　　　　 D.carbon dioxide

高三英语阅读理解中等难度题查看答案及解析

Scientists have long understood the key role that oceans play in controlling the Earth’s climate. Oceans cover 70 per cent of the surface of the globe and store a thousand times more heat than the atmosphere does. What’s newer is the understanding of how this key component(组成部分) of our climate system responds to global warming.

A brake on global warming—for now

One of the oceans’ most important climate functions is absorbing heat and carbon dioxide(CO2), one of the gases that causes global warming. Acting as something absorbing heat, the oceans have absorbed huge amounts of heat and CO2 in the last forty years.

Fujita explains, “the oceans are saving us from faster climate change—they are putting a brake on the climate system.”

“That’s the good news,” he adds. “The bad news is that the oceans only slow the atmospheric warming. Once the oceans come to balance with a greenhouse-gas warmed earth, the extreme heat will remain in the atmosphere and things will get much hotter.” But where and how the oceans release this slowly increased heat is uncertain. And as the ocean stores heat, fragile(脆弱的) underwater ecosystems are struggling.

The most recent scientific report from the Intergovernmental Panel on Climate Change(IPCC) also notes with concern that the ocean is acidifying(酸化) because of increased absorption of atmospheric CO2. and thus causing a threat to shell-forming species.  Sharp increase in CO2 levels will cause further acidification of the ocean.

Currents distributing heat

Another important role the oceans play is that of distributor(散布者). Oceans deliver heat and life-sustaining nutrition around the globe. Just as blood tube bring oxygen and nutrition to cells in the human body, the ocean’s currents carry oxygen, nutrients and heat throughout the Earth. The ocean distributes 25 to 50 per cent of energy the planet receives from the sun. For example, the Gulf Stream carries heat across the Atlantic. This warm current gives northwestern European a milder climate that it would normally have so far north. A change to the ocean’s circulation patterns could throw Europe into a colder period, even as the rest of the world is experiencing warmer temperatures.

1. We can infer from the passage that _______.

2. From the passage we can learn that ocean’s currents _______.

D.  change the ocean’s circulation patterns

3. Which of the following are the results of the ocean absorbing heat and CO2?

a. It causes further acidification.

b. It makes the atmosphere hotter.

c. It balances the oceans with a green-house gas.

d. It affects shell-forming species.

e. It makes the oceans act as a heat sponge.

f. It controls the Earth’s climate.

4. If the ocean’s circulation pattern changed, ______.

高三英语阅读理解中等难度题查看答案及解析

Generally speaking, the family, not the school, plays the　　　　　 role in educating children for life.

A. potential　　 　　　　 B. primary

C. personal　　 　　　　　 D. professional

高三英语单项填空中等难度题查看答案及解析