An absolute description of the threat hanging...

An absolute description of the threat hanging over the world's mammals,reptiles,amphibians and other life forms has been published by the well-known scientific journal,Nature.A special analysis carried out by the journal indicates that an astonishing 41% of all amphibians on the planet now face extinction while 26% of mammal species and 13% of birds are similarly threatened.

Many species are already critically endangered and close to extinction,including the Sumatran elephant,Amur leopard and mountain gorilla.But also in danger of vanishing（消失）for the wild,it now appears,are animals that are currently rated as merely being endangered.

In each case,the finger of blame points directly at human activities.The continuing spread of agriculture is destroying millions of hectares of wild habitats every year,leaving animals without homes,while the introduction of newly-come species,often helped by humans,is also damaging native populations.At the same time,pollution and overfishing are destroying ocean ecosystems.

"Habitat destruction,pollution or overfishing either kill off wild creatures and plants or leaves them badly weakened," said Derek Tittensor,an ocean ecologist at the World Conservation Monitoring Centre in Cambridge. "The trouble is that in coming decades,the additional threat of worsening climate change will become more and more common and could then kill off these survivors."

The problem,according to Nature,is worsened because of the huge gaps in scientists knowledge about the planet's biodiversity.Evaluations of the total number of species of animals and plants alive vary from 2 million to 50 million.In addition,evaluations of current rates of species' disappearances vary from 500 to 36,000 a year. "That is the real problem we face," added Tittensor. "The scale of uncertainty is huge."

In the end,however,the data indicate that the world is heading cruelly towards a mass extinction-which is defined as one involving a loss of 75% of species or more.This could arrive in less than a hundred years or could take a thousand,depending on extinction rates.

1.What's the main idea of the first two paragraphs?

A. Figures about some wild animals are astonishing.

B. Nature is the famous journal around the world.

C. Many endangered species are close to extinction.

D. Some rare species have appeared around the world.

2.From paragraph 4 we know that another future threat is　　　　 .

A. destruction of habitats　　 B. overfishing and pollution

C. the worsening climate change　　 D. killing off wild creatures and plants

3.What is the real problem we are facing now according to paragraph 5?

A. The killing of wild creatures and cutting of trees.

B. The global warming caused by human beings.

C. The destruction of ocean ecosystem by pollution.

D. Evaluation of current rates of species' disappearances.

4.What does "This" in the last sentence refer to?

A. mass extinction.　　 B. extinction rates.

C. extinction time.　　 D. 75% of species or more.

高一英语阅读理解中等难度题查看答案及解析

The prisoners then wrote the stories in a book called “The Description of the World”, ____ became one of the best-selling books in Europe.

高一英语单项填空简单题查看答案及解析

Young people all over the world can ________ Yang Liwei as an example of a man who managed to live his dream.

A.look out for B.look back on C.look down upon D.look up to

高一英语单项填空中等难度题查看答案及解析

The size and location of the world’s deserts are always changing. Over millions of years, as climates change and mountains rise, new dry and wet areas appear. But within the last hundred years deserts have been increasing after frightful speed. This is partly because of natural changes, but most responsible for creating deserts are men.

Man can make deserts, but they can also prevent them from getting bigger. Algeria is planning a green belt of trees along the edge of the Sahara Desert to stop the sand. In China, too, windbreaks are being built in the northwest to keep the desert from growing.

But desert still threaten the world. Experts believe that land that is on the way to becoming deserts equals the size of Australia, Russia and US put together. Can we stop the spread of the world’s deserts and save the land that is so essential to mankind? Yes, we can, And we must.

1.The reason for the land that turns into deserts is mostly because of _______

A. the changing of the climates　　　　 B. man

C. the natural changes　　　　　　　　　　 D. the wind

2.The word “windbreak” means _______

A. trees planted as a belt to stop the wind

B. high walls as a belt to stop the wind

C. long and deep ditch as a belt to stop the wind

D. men stood side by side as a belt to stop the wind

3. The deserts still threaten the world in the way ______

A. of increasing at an unbelievable speed

B. of spreading in Australia , Russia, and the US

C. of appearing new dry and wet areas in every part of the world

D. that they cause the changes of the climates

4.Which of the following do you think is the best method?____

A. People move away from the land that is on the way to become deserts

B. To build great walls to stop the wind and sand

C. To plant trees and grass on the surface of the land

D. To irrigate the desert

高一英语阅读理解中等难度题查看答案及解析

The cheetah(猎豹)is best known for being the world’s fastest land animal, reaching speeds of just over 110kph for short period of time. However, many people know little else about this wonderful animal. The word cheetah probably comes from a Hindi word spotted animal. It is very similar to other cats but also has some obvious differences. Its body is much leaner than most cats and it has much longer legs.

People sometimes make a cheetah a leopard(美洲豹)because they both have spots, but in fact they are very different. A leopard is far heavier and more powerful, but also much slower. The cheetah’s spots cover most of its body except for its stomach and throat. The cheetah’s tail has spots and these become rings at the end of the tail.

An adult cheetah weighs between 35-65 kilograms and is about 80 centimeters high at the shoulder. The cheetah’s head is quite small and the eyes are quite high up. A black line runs from each eye down to its mouth and makes it look a little sad. It has high shoulders that help it to walk so gracefully.

Cheetahs are very fast but they are not very strong. They are not good fighters and will run away rather than fight another animal to protect their food. If they make a kill, it is sometimes taken away from them by stronger animals such as lions and leopard. These animals will kill their young if they get the chance. The cheetah is not a threat to humans at all. It will not attack humans and prefers to stay away from occupied areas.

1.Many people know that the cheetah________

2.The cheetah ________

3.Cheetahs will not fight another animal to protect their food because _______

高一英语阅读理解困难题查看答案及解析

What do the world’s most successful people all have in common?

By examining the work habits of over 150 greatest writers and artists and scientists, the researchers including Standford Professor Jeffrey Preffer found that high achievers like Robert Moses turn out to be all alike:

Busy ! Busy!

1.In a study of general managers in industry, John Kotter reported that many of them worked 60 to 65 hours per week—which translates into at least six 10-hour days. The ability and willingness to work difficult and tiring hours has characterized many powerful figures. Energy and strength provide many advantages to those seeking to build power.

Just Say No!

The difference between successful people and very successful people is that very successful people say “no” to almost everything. And that’s what gives them the time to accomplish so much.2.And focus means saying “no” to a lot of distractions (分神).

Know What You Are!

Ignore your weakness and keep improving your strengths. Don’t waste time exploring skill areas where you have little competence. Instead, focus on—and build on—your strengths.3.

Create Good Luck!

Luck is not magical—there is a science to it. Richard Wiseman studied lucky people for his book Luck Factor, and broke down what they do right.4.By being more outgoing, open to new ideas, following the feeling that something is true, being optimistic, lucky people create possibilities.

Does applying these principles to your life actually work? Wiseman created a “luck school” to test the ideas—and it was a success. In total, 80 percent of people who attended Luck School said that their luck had increased.5.

A. Spend enough time to improve your weakness.

B. Achievement requires focus.

C. On average, these people reported that their luck had increased by more than 40 percent.

D. High achievers never stop working and they never lose a minute.

E. Busy people are more likely to be lucky.

F. This means knowing who you are, what you are and what you are good at.

G. Certain personality types are luckier because they behave in a way that offers the chance for good opportunities.

高一英语七选五中等难度题查看答案及解析

People from all over the world visit Disneyland to have fun, not to get sick. But last week， an outbreak of measles（麻疹）spread from the Southern California theme park. As of Monday, January 19, at least 52 people have got the easily spread illness.

The majority of the reported cases of measles are from people who visited the park before. According to the California Department of Public Health, these people were exposed to the illness at Disneyland from December 17-20.

Officials believe the cause is likely someone who caught measles abroad and visited Disneyland, but this has yet to be proved. However, in 2014, California had its highest measles infection rate in nearly twenty years. There were 66 cases of measles reported in the state―23 of them in Orange County, where Disneyland is located.

Measles spreads very easily. It can be caught from coughing and sneezing. Crowded areas like theme parks are especially suitable for its spread.

The illness starts with a fever and develops into symptoms including a cough， runny nose, red eyes and so on. About three out of ten people infected with measles will develop another health problem, including an ear infection or pneumonia(肺炎).

The best way to guard against measles is to get vaccinated(打疫苗). An unvaccinated person is 35 times more likely to catch measles than someone who received a vaccination.

1.What’s the possible reason of this illness’s occurring in California?

A. There were too many people visiting Disneyland.

B. Somebody with measles visited Disneyland.

C. California is a place fit for this illness’s spread.

D. Some people ate something that had gone bad.

2.After visiting Disneyland some people ___________.

A. had a lot of fun　　　　　　 B. were found missing

C. lost their lives　　　　　　 D. became seriously ill

3.How many people suffered from measles in California in 2014?

A. 66　　　　　 B. 23　　　　　 C. 43　　　　 D. 52

4.What do we know about measles from the text?

A. Half of people infected with it will die soon.

B. It usually begins with a cough and red eyes.

C. It spreads easily in a place with many people.

D. It’s impossible to stop it from spreading.

5.Which of the following words can replace the underlined words “guard against” in the last paragraph?

A. catch　　　　 B. prevent　　　　 C. make　　　　　 D. keep

高一英语阅读理解中等难度题查看答案及解析

Not all people like to work but everyone likes to play. All over the world men and women and boys and girls enjoy sports.

1. They help to keep people healthy and feeling good. When they are playing games, people move a lot. This is good for their health. Having fun with their friends makes them happy.

2. In small towns, crowds meet to watch the bicycle races or the soccer games. In the big cities, thousands of people buy tickets to see an ice-skating show or a baseball game.

3.What are your favorite sports now? You probably play the games that people in your town or city play. 4. Then swimming is probably one of your sports. Boys and girls in Australia love to swim. There are wonderful beaches there and the weather is good for swimming. 5. Then you would like to ski. There are many skiers in Austria where there are big mountains and cold winters. Does it rain often where you live? Then kite flying would not be one of your sports. It is one of the favorite sports of Thailand.

A.How many sports do you like?

B.What's the weather like?

C.Is the climate hot where you live?

D.Or do you live in a cold climate?

E.Many people enjoy sports by watching others play.

F.What games have you played?

G.Sports help people to live happily.

高一英语七选五中等难度题查看答案及解析

Smile is recognized as a/an _________ language, which can be understood by people all over     the world.

A．artificial           B．technological       C．universal          D．analytical

高一英语单项填空中等难度题查看答案及解析

Football, ________ is an interesting game, is played all over the world.

A. that          B. which          C. it              D. who

高一英语单项填空中等难度题查看答案及解析