Most of us are used to seasons.Each year, spring follows winter, which follows autumn, which follows summer, which follows spring.And winter is colder than summer.But the earth goes through temperature cycles over much longer periods than those that we experience.
Between 65 000 and 35 000 years ago, the planet was much colder than it is now.During that time the temperature also changed a lot, with periods of warming and cooling.Ice melted during the warm periods, which made sea levels rise.Water froze again during the cold periods.
A new study from Switzerland sheds lighton where ice sheets melted during the ice age.
It now seems that the ice melted at both ends of the earth, rather than just in either northern or southern areas.This surprised the researchers from the University of Bern.
Scientists have long assumed(认为)that most of the ice that melted was in the Northern hemisphere(半球)during the 30 000-year-long ice age.That belief was held because the North Pole is surrounded by land, while the South Pole is surrounded by the Antarctic Ocean.It is easier for ice sheets to grow on land.If surrounded by sea, the ice can easily just slip to the ocean instead of building up.
The researchers used a computer model to look at the ways the ice could melt and how it might affect sea levels.They compared these results to evidence(迹象)of how temperatures and currents actually changed during that time.
The model showed that if it was only in the Northern hemisphere that ice melted, there would be a bigger effect on ocean currents(洋流)and sea temperatures than what actually happened.Studies suggest that melting just in the Southern hemisphere would have been impossible, too.
The only reasonable conclusion, the scientists could make, was that the ice melted equally in the North and the South.
It is still a mystery(谜)as to what caused the temperature changes that caused the ice to melt.
(1)
We can learn from the text that ________.
[ ]
A.
we have experienced temperature cycles since they began
B.
what caused ice to melt is still unknown
C.
the planet was much colder than it is now between 65 000 and 35 000 years, during which temperature hardly changed
D.
before the new study, scientists long believed that ice melted just in either northern or southern areas
(2)
The underlined phrase “sheds light on”(in Paragraph 3)can be replaced by ________.
[ ]
A.
throws doubts on
B.
beats down on
C.
makes it clear
D.
makes light of
(3)
The first two paragraphs were written ________.
[ ]
A.
to lead up to the subject that ice melted during the 30 000-year-long ice age
B.
to describe what the weather was like during the ice age
C.
to compare climate nowadays with that of the ice age
D.
to explain what a temperature cycle is
阅读理解
No one can believe that the over 6300kilometer Great Wall might disappear some day.Believe it or not, the Great Wall is being destroyed by people.Less than 20 percent of the Great Wall built in the Ming Dynasty, is still perfect, but about 80 percent is in danger.The Great Wall can be called “great” mostly because of its amazing length.But we should realize that the length was made up of one brick at a time.If we do nothing to save the Great Wall, it will become a series of separate wasteland rather than a historic site.
The Great Wall is actually a series of walls built and rebuilt by different dynasties over the past 2000 years.It began in the rule of China’s first emperor, Qin Shihuang of the Qin Dynasty(221 BC-206 BC), and lasted into the Ming Dynasty.The parts built before the Ming Dynasty have nearly disappeared.People are familiar with sections such as Badaling in Beijing and Jiayuguan Pass in Gansu, because they have been open to tourists for many years.But those sections far away from the public eyes have been almost forgotten.
Few local people knew the 3-metre-high walls made of earth and stones beside them are part of the Great Wall.The lack of knowledge is considered as one of the main reasons behind human.
The bricks on the Great Wall are carried off by countryside people to build their houses, sheep corrals and pigsties.Some were taken away to build roads.Bricks carved with people’s names are put away as remembrances.Rubbish is spread over the battlements.The bricks can be sold for 15 yuan per tractor load.Those who destroyed and are destroying the Wall know its name, but are not clear about its cultural meaning.It will take a long time to let them know this.The local farmers not only carried off the body of the Wall but also dug out the entire base.
It is necessary to protect the Great Wall.First of all, the officials should be aware of the importance of the Great Wall.Young Chinese should know more about the nation’s great civilization and learn to love it.
(1)
Why does the writer say the Great Wall might disappear?
[ ]
A.
It is useless from now on.
B.
It will be replaced by a new one.
C.
Some parts of it are being destroyed.
D.
It is too old to be used again.
(2)
According to the passage, which of the following is TRUE?
[ ]
A.
The Great Wall was completed in the Ming Dynasty.
B.
Not all the foreign tourists like the Great Wall.
C.
The first part of the Great Wall was built in 221 BC.
D.
The Qin Great Wall was protected well.
(3)
The underlined part “those sections far away from the public eyes”(in Paragraph 2)refers to the parts of the Great Wall ________
[ ]
A.
that are too difficult to find
B.
nobody can watch
C.
that are too far to be seen
D.
that are not well-known to the public
(4)
What’s the main reason of the Great Wall’s being destroyed?
[ ]
A.
The local people are short of culture knowledge.
B.
The local people need bricks and stones to build houses.
C.
The local people think that the Great Wall is not important.
D.
The local people sell the bricks for a living.
阅读理解
Beginning college is exciting:new ideas to explore, new challenges to be met and many decision to be made.Your future begins here.
However, you will find college life is different from your previous school environment.Many of us can be easily overwhelmed(压垮)by the details of running a well-balanced life.While some of us may have the know-how, I guess there are more of us who can benefit from learning about the experiences of others who have walked the college halls before you.
The following you may find of use about life on campus.
◆Plan well.There are so many new things to do at a new college or university.Give yourself time to make new friends and become familiar with the campus, but don’t forget why you are there.Give some time for social activities and manage your time wisely.
◆If you don’t have a “system” for planning your time now(like a day timer, a computer date book), get one.Most of all, don’t depend on your memory.
◆Don’t miss the guidelines.The restrictions, rules and regulations of all kinds can usually be found in your student handbook.Consider them well-balanced food for thought.What dates are important? What pieces of paper need to be handed in? What can/can’t you do in class? What can/can’t you do in your student residence(住处)? Who has right for what? What do you need to complete to graduate?
◆Write the word “STUDY” on the walls of our bedroom and bathroom, and maybe it will help to write it on a piece of paper and stick it on the telephone, TV and the kitchen table.Consider this-you are paying thousands of dollars for your courses.You pay every time you have to repeat or replace a course.
◆Build your identity.This is the time for you to decide what to do and what not to do.Take as much time as you need to explore new ideas.Do not be afraid of the beyond.This is learning to make good choices.
(1)
What is the main purpose of the passage?
[ ]
A.
To offer advice on college life.
B.
To explain why college life is exciting.
C.
To describe the importance of college life.
D.
To persuade you to go to college.
(2)
According to the text, why is it exciting to begin college life?
[ ]
A.
Because you will have more freedom at college.
B.
Because you will no longer be afraid of the beyond.?
C.
Because you prepare for your future career and life there.
D.
Because professors there will provide you with many new ideas.
(3)
What is the probable meaning of the underlined word “know-how”?
[ ]
A.
An understanding of how things are going at college.
B.
Practical knowledge about how to behave and what to do at college.
C.
College halls where rules and regulations are presented.
D.
An environment completely different from the one you’re used to.
(4)
According to the text, college students ________.
[ ]
A.
needn’t learn from those who went to college before them
B.
spend as much time as possible on social activities
C.
should know what they have right for on campus
D.
are supposed to repeat or replace at least one course
阅读理解
Tony Bennett, the American singer recently touring Britain, can’t remember how many times he has sung his standard hit “I Left My Heart in San Francisco”.He sang it again to his audience at the London Palladium last night.
“I never get tired of singing it,” he said, “I like it very much.It’s a great city and it’s a good song.”
Bennett is to record a TV special with the American singer Lena Horne while he is here.And a new LP recorded by him in London for Philips titled “Listen Easy” will be published in June.
“I like it here,” he added quietly over whiskey.“I would like to live here so many months of the year.”
He already keeps a large flat in Grosvenor Square, where he is staying with his actress wife Sandie Grant and their three-year-old daughter Joanna.It has a studio where he likes to paint.Tony plans to have his first exhibition later in the year and he has already sold one picture for $4000.At the end of the year Tony is to star in a musical film which has been specially written for him called “Two Bits”, an informal expression for 50 cents.It’s about an Italian immigrant(移民)who goes to America, but he becomes a failure.
“In many ways it’s very close to my life the way the story has been written, ” said Bennett.“My father, an Italian, was ill and died when I was nine.He always wanted me to sing, but he never lived long ?enough? to be a part of my success.”
The film is to be made by Italy’s top director Vittoria De Sica.
(1)
The underlined phrase “standard hit” in the first paragraph most probably means “________”.
[ ]
A.
Bennett’s favorite song That’s not very popular
B.
a song that is always popular
C.
a song which is like a heavy blow to his audience
D.
a song which makes him standard
(2)
According to the text, which of the following is NOT true?
[ ]
A.
“Two Bits” is a musical film.
B.
Tony is to star in a film.
C.
“Listen Easy” is a new record by Bennett.
D.
“Listen Easy” has been published.
(3)
What does Tony Bennett want to do?
[ ]
A.
Buy a house and live in England.
B.
Stay with his wife and daughter in England.
C.
Live part of each year in England.
D.
Leave America and settle in England.
(4)
What can we learn about Tony Bennett’s father from this text?