Stone tools and pieces of animal bone from ab...

Stone tools and pieces of animal bone from about 16,600 years ago are the earliest evidence yet of human beings in the New World, scientists say.

The objects were found in the western United States. They were recovered from an archaeological site called Cooper Ferry on the Salmon River near the town of Cottonwood Idaho. Scientists used radiocarbon dating methods to find out how old these artifacts are.

The scientists say people lived in or passed through the area when ice covered large parts of North America. That period of time is known as Earth's Ice Age. During the period, big mammals like camels lived in North America. Loren D avis is an anthropology (人类学) professor at Oregon State University. He led the team of scientists working at Cooper's Ferry.

“The Cooper's Ferry site is the earliest radiocarbon-dated archaeological evidence in the Americas.” Davis said. The researchers said the artifacts suggest that people first lived in the area between 16,600 and 15,300 years ago and returned to live there many times after that.

Scientists say humans first appeared in Africa about 300,000 years ago and later spread throughout the world. There has been much scientific debate about when humans first entered the Americas. They are believed to have crossed into North America at a time when Siberia and Alaska were connected by land.

The new findings support the assumption that the first human migration into the Americas traveled down the pacific coast instead of an inland path. Davis said. “The Columbia river would provide the first Americans their first route to interior lands south of the continental ice sheet.”

The researchers noted details of some of the sharp objects that would have been used for hunting. These artifacts appear similar to those found in northern Japan from a somewhat earlier date. Davis said. “We assume that this may signal a cultural connection between early peoples who lived around the northern Pacific Rim.” “Traditional technological ideas spread from northeastern Asia into North America at the end of the last glacial period,” he added.

1.What do the “artifacts” in paragraph 4 refer to?

A.The migrants traveling into the North America.

B.The objects found in Cooper's Ferry on the Salmon River.

C.Stone tools and animal bones from about 300,000 years ago.

D.The camels living in north America during the earth's Ice Age.

2.It can be inferred from paragraphs 5-7 that ________.

A.migrants possibly traveled deep into North America through the Columbia

B.North America has long been considered the source of human civilization

C.there existed no cultural links between early peoples around the world

D.experts have agreed on when humans first entered the Americas

3.What is the best title for the text?

A.The Artifacts Recovered from an Archaeological Site in Africa

B.The Spreading of Ancient Technology between Early Settlers

C.The Benefits of Radiocarbon Dating Method

D.The First Human Migration into the Americas

高三英语阅读理解中等难度题查看答案及解析

_____from other continents for millions of years, Australia has many plants and animals not found in any other country in the world.

A. Being separated                   B. Having separated

c. Having been separated                 D. To be separated

高三英语单项填空中等难度题查看答案及解析

_________ from other continents for millions of years, Australia has many plants and animals not found in any other country in the world.

高三英语单项填空困难题查看答案及解析

A popular saying goes, “Sticks and stone may break my bones, but words will never hurt me.” However, that’s not really true. Words have the power to build us up or tear us down. It doesn’t matter if the words come from someone else or ourselves – the positive and negative effects are just as lasting.

We all talk to ourselves sometimes. We’re usually too embarrassed to admit it, though. But we really shouldn’t be, because more and more experts believe talking to ourselves out loud is a healthy habit.

This “self-talk” helps us motivate ourselves, remember things, solves problems, and calm ourselves down. Beware, though, that as much as 77% of self-talk tends to be negative. So in order to stay positive, we should only speak words of encouragement to ourselves. We should also be quick to give ourselves a pat on the back. The next time you finish a project, do well in a test, or finally clean your room, join me in saying, “Good job!”

Words possess power because of their lasting effects. Many of us regret something we once said. And we remember unkind words said to us! Before speaking, we should always ask ourselves: Is it true? Is it loving? Is it needed? If what we want to say doesn’t pass this test, then it’s better left unsaid.

Words possess power: both positive and negative. Those around us receive encouragement when we speak positively. We can offer hope, build self-esteem(自尊) and motive others to do their best. Negative words destroy all those things. Will we use our words to hurt or to heal? The choice is ours.

1.The author argues in the first paragraph that ________.

A．words will never hurt us at all

B．words have lasting effects on us

C．positive effects last longer than negative effects

D．negative words last longer than positive effects

2.Why should we not feel embarrassed when talking to ourselves?

A．Almost everybody has the habit of talking to oneself.

B．It does harm to have “self-talk” when we are alone.

C．Talking to ourselves helps us to solve all the problems.

D．Talking to ourselves is believed to be good for our health.

3.The underlined phrase “give ourselves a pat on the back” in Paragraph 3 means _________.

A．blame ourselves    B．punish ourselves  C．praise ourselves       D．talk to ourselves

4.Which of the following statements would the author agree to?

A．It is better to think twice before talking to others.

B．It is impossible for unkind words to be forgotten.

C．Words always possess long positive effects.

D．Kind words are sometimes not needed at all.

高三英语阅读理解中等难度题查看答案及解析

Most city parks are places where you can escape from big，ugly structures of metal and stone．The Manhattan High Line is different．Raised 25 feet above the ground，this massive metal structure once supported a rail line．The line opened in 1934 but it was hardly used after the 1960s，and much of it was torn down．However，one stretch remained in a region of Manhattan．The railway structure was ugly and everyone knew that at some time，it would have to be removed．

But the High Line was not destroyed．In fact．now the old rail line serves as one of the most peaceful places in the city．The idea to change the rail line into a park came from Joshua David and Robert Hammond．In 1999，they attended a community meeting to decide the fate of the High Line．David and Hammond were the only people at the meeting interested in saving the historical structure. Later on，when they asked railway officials to take them up to look at the High Line，they saw a mile and a half of wild flowers growing in the middle of the city，and they realized that the High Line had potential to become a park．There was growing interest in improving urban centers，and so the project quickly gathered funds for construction．

The first section of the High Line opened in 2009 and immediately became popular with tourists and locals alike．Each part of the park has a different atmosphere．Some areas are like balconies with wonderful city views．Other sections have wide lawns and walkways planted with wild flowers．Only the final section remains the way it has been for the last fifty years—a railway line overgrown with weeds．

1.What is the text mainly about?

A．A park．　　                     B．A train line．

C．City transport．                D．A historical monument．

2.Which of the following is NOT true about the High Line?

A．It is above ground level．　　     B．Only part of the line remains.

C．It is now a popular park．        D．Trains still use the line.

3.Why did David and Hammond want to save the High Line at first?

A．They thought it would make a good park．

B．They wanted to reopen the train line．

C．They thought it had historical value．

D．They were interested in improving the city.

4.Why were people easily persuaded by David and Hammond’s idea?

A．They wanted to make cities nicer places．

B．They wanted to see the wild flowers too.

C．They realized the High Line was important.

D．They knew that funds were available．

5.We can infer from the last paragraph that the park is ______________.

A．popular with tourists　　         B．similar to what it used to be

C．various in its design         D．1ike natural countryside

高三英语阅读理解中等难度题查看答案及解析

Most city parks are places where you can escape from big, ugly structures of metal and stone. The Manhattan High Line is different. Raised 25 feet above the ground, this massive metal structure once supported a rail line. The line opened in 1934 to bring trains directly into factories and warehouses. It was hardly used after the 1960s, and much of it was torn down. However, one section remained in an area of Manhattan called Chelsea. Chelsea was becoming more and more valuable as restaurants, art galleries and apartments were built, but the ugly railway structure remained as a dead weight. Everyone knew that at some time, it would have to be removed.

But the High Line was not destroyed. In fact, now the old rail line serves as one of the most peaceful places in the city. It holds an elevated park, with beautiful gardens, a sidewalk and great views of the city. The idea to change the rail line into a park came from Joshua David and Robert Hammond. In 1999, they attended a community meeting to decide the fate(命运) of the High Line. David and Hammond were the only people at the meeting interested in saving the structure for its historical significance. Later on, when they asked railway officials to take them up to look at the High Line, they saw a mile and a half of wild flowers growing in the middle of the city, and they realized that the High Line had potential to become a park. There was growing interest in improving urban centers, and so the project quickly won support and funds for construction were easily obtained.

The first section of the High Line opened in 2009 and immediately became popular with tourists and locals alike. Each part of the park has a different atmosphere. Some areas are like balconies (阳台)with wonderful city views. Where the rail line goes between buildings, trees are thickly planted. Other sections have wide walkways planted with wild flowers. Only the final section remains the way it has been for the last fifty years – a railway line overgrown with weeds.

1.The underlined phrase “a dead weight” in Paragraph 1 means_____.

A. something with potential to be better.

B. something with historical interest.

C. something which is a danger to people.

D. something useless which slows progress.

2.According to Paragraph 2, David and Hammond wanted to save the High Line because they_____.

A. thought it had historical value

B. wanted to reopen the train line

C. thought it would bring them money

D. were interested in improving the city

3.From the last paragraph, we can learn that the park ______.

A. is different in its design

B. is covered with trees

C. didn’t change at all

D. became a natural countryside

4.Which of the following is NOT true about the High Line?

A. It is situated above ground level.

B. Only part of the line remains.

C. It is now a popular park.

D. Trains still use the line.　

高三英语阅读理解中等难度题查看答案及解析

There were two interesting pieces of news items in the paper a few years ago. One was about a man who received a bill from the telephone company for $ 2,000 a month for doing nothing.

　The connection between the two news items is simple; computers-the best invention of the 20th century. The telephone bill came from a computer which made a terrifying mistake; that man’s bill was only $ 23.26. The other item was not as amusing. A man walked into the unguarded computer room of a large packaged food company and expertly programmed the computer to pay him $ 2,000 a month for raw meat which he “supplied ” to the company. Of course he never sent the meat, but he certainly received the money . The computer wrote out a bill, and even “signed ” it. It was only a random (随便) check that uncovered the trick. It could be happening in thousands of other companies all over the world.

　Computers are not the magical workers that some people say they are. They make mistakes, they’re sometimes slower than human beings and they’re easily fooled.

　The US used to conscript (征兵) people with the help of a computer. The army sent out a card, which had to be filled in and sent back. It was easy to avoid being called up simply by spreading candle-wax(腊) on the card. The computer couldn’t read the card, and did nothing with it.

　It’s in our everyday life that computers cause many problems. Let’s get back to using people instead of computers, before a mistake that we can’t put right.

1.In the first paragraph we can conclude ______.

2.The main idea of the second paragraph is _______.

3.Computers ______.

4.The writer thinks _______.

高三英语阅读理解中等难度题查看答案及解析

Many animals move from one place to another at certain times of the year. This annual movement is called migration. They migrate to find food, seek a partner, or in search of warmer weather. One of the most wonderful migrations in nature is that of the North American monarch butterfly.

Every autumn, millions of these beautiful insects with fine black and orange wings begin a long and difficult journey. Somehow they manage to travel around 4, 000 kilometers south and find their way to California or Mexico. However, until recently no one knew how they did this.

A team of scientists led by Professor Eli Shlizerman at the University of Washington has now found the answer. They have found out that the monarch is able to tell the time of day. It uses its eyes to measure the position of the sun. These two pieces of information—the time of day and the point where the sun is in the sky—allow the butterfly to determine the way to go. Eventually, it manages to reach the places where it will spend the winter.

The solution to the mystery of the monarch’s amazing ability comes at a time when it is in serious trouble. Its population has crashed by as much as 90 per cent in the last few years. Sadly, human activity is the main reason why the number of monarch butterflies is falling. In many of the places where the butterfly can be found, people are destroying the natural environment. They cut down trees and use chemicals that kill the plants that monarch caterpillars eat.

The research on the monarch’s behavior has however led to a greater awareness of this creature. People have been working together to record its migration and make sure that there are enough plants for it to feed on. If this works, there may come a time when the number of monarch butterflies increases once again. The more we know about this lovely creature, the greater the chance it will survive and keep its place in the natural world for a long time to come.

1.Which is not the purpose of animals’ migration according to the text?

A.To search for food. B.To look for a partner.

C.To breed young babies. D.To stay away from cold weather.

2.What mainly caused the decrease in the number of the monarch butterflies?

A.Weather changes. B.Human activities.

C.Trees being cut down. D.The long migration every year.

3.What can we know from the text?

A.All the animals migrate at fixed times of the year.

B.The monarch has the ability to identify the time of day.

C.The population of the monarch is decreasing rapidly every year.

D.No one knows how the monarch butterflies make their way to their destinations.

4.What does the last paragraph imply about the research?

A.It is quite encouraging. B.it is fairly complex.

C.It is very unacceptable. D.It is rather useless.

高三英语阅读理解简单题查看答案及解析

In my time here at Carleton College, I’ve picked up many valuable pieces of advice from others, and have come up with a few of my own. With my time here drawing to a close, here’s two of the most valuable ones I wish I had known as a freshman .

First, don’t expect to join all the clubs here. Taking part in them is good, but the workload here is too heavy and time with your friends is too limited to devote yourself to a million and one clubs. Find a couple of things you dig, and you’ll find yourself much happier than if you had spent your time joining every single organization that sounds somewhat interesting to you. Also, don’t always think of your free time in terms of organizations you can join. Getting really good at something - an instrument, creative writing, cooking - is just as good a use of your free time, even if it might never be taken into any resume(简历).

Second, when Socrates said “Know Yourself”, he was talking about your sleep schedule. You can fool yourself into thinking that an 8:30 a. m. class in the winter is the perfect way to get your day started, but you soon may find yourself emailing the teacher with excuses for being absent. Scheduling all your classes afternoon is sometimes equally deadly; you might just end up going out the night before knowing you can safely sleep in. I’ve found that the way to take classes is to load them in the middle of the day; nothing before 9:50 a. m., nothing after 3:10 p. m.

1.Who is probably the author of the text?

A.A school headmaster. B.A graduating student.

C.A university teacher. D.A freshman at Carleton.

2.Which of the following can replace the underlined word“dig”in paragraph 2?

A.make a hole in B.work hard on

C.research into D.are fond of

3.What does the author suggest doing in one's free time at college?

A.Getting apart-time job.

B.Join clubs that seem interesting.

C.Take up a few hobbies.

D.Prepare a resume as early as possible.

4.What is the best t me for taking classes according to the author?

A.In the evening. B.In the afternoon.

C.From8：30a.m.to9：50a.m.. D.From9：50a.m.to3：10p.m..

高三英语阅读理解中等难度题查看答案及解析

Three years ago，a society was set up to________the endangered animal and plant life from dying out in this area.

A．obtain　    B．preserve

C．observe　    D．deserve

高三英语单项填空中等难度题查看答案及解析