E
Could we "terraform" Mars —that is, change its frozen, thin-aired surface into something more friendly and Earthlike? Should we? The first question has a clear answer: Yes, we probably could．Spacecraft, including the ones now exploring Mars, have found evidence that it was warm in its youth, with rivers flowing into vast seas．And right here on Earth, we've learned how to warm a planet: just add greenhouse gases to its atmosphere．Much of the CO2 that once warmed Mars is probably still there, in frozen dirt and polar ice caps, and so is the water．
Most of the work in terraforming, says NASA scientist Chris Mackay, would be done by life itself． "You don't build Mars," Mackay says．"You just warm it up and throw some seeds．" Powerful greenhouse gases could be produced from elements in dirt and air on Mars and blown into the atmosphere; by warming the planet, they would release the frozen CO2, which would quicken the warming and increase atmospheric pressure to the point where liquid water could flow．Meanwhile, says botanist James Graham of the University of Wisconsin, human settlers could seed the red rock with a succession （系列） of ecosystems ?first bacteria and lichens （地衣）, which survive in Antarctica, later mosses （苔藓）, and after one thousand years or so, redwoods．Getting breathable oxygen levels out of those forests, though, could take thousands of years．
However, Mars is in no immediate danger．Some space scientists recently recommended going to the moon or an asteroid （小行星） first, and pointed out the space agency lacks the funds to go anywhere．It didn't estimate the cost of gardening a dead planet．
72．What is the most essential to make Mars fit for living?
A．Turn ice into flowing water． B．Clean the dirty atmosphere．
C．Make the atmosphere more suitable． D．Go to the moon or an asteroid first．
73．What does the author think of the idea ofterraforming Mars?
A．We could do it． B．We couldn't do it．
C．We should do it． D．We shouldn't do it．
74．In the botanist's opinion, man needs to __________.
A．enable Mars to clean its atmosphere
B．build a greenhouse on Mars
C．send some people to settle on Mars
D．cultivate ecosystems from lower to higher life form
75．What is the best title for the passage?
A．Making Mars the New Earth． B．A Good Way to Change the Universe
C．Humans' Great Power． D．Terrible Science and Technology．
Dear College Dean,
It is my understanding that this college has received a large donation to be used to enhance (improve) the quality of life for students: expand the bookstore or add computers to the computer lab. It is the tradition of this school to promote education and to be the pioneer of new technology. That is why I strongly argue in favor of the addition of more computers to the computer lab.
Although expanding the campus bookstore to include CDs, gifts, and a snack bar will give a nicer look to the college, we have to think about a greater goal and a more practical way to enhance the quality of life for students. What do we .want for our students and our college? Do we want our college to be known as a place with a great bookstore where you can find CDs and gifts, or as a place where the students can explore and research in their field using the best tools provided by technology? In addition, there are already several snack bars on campus, and there are music stores nearby, so students do not depend on the college bookstore for these things.
We live in a highly technological world and computers play an increasingly important role in how we live. As a learning institution, this college has the responsibility to offer its students the best technology to help them prepare for their future. Many students will be expected to be familiar with the latest software and other tools when they go on to work or to graduate school.
While they are in college, students find they are expected to use computers. Many professors expect students to use computers to do homework or to complete projects. Since students are competing for good grades, those who have limited access to computers are at a great disadvantage. Furthermore, being able to do projects using the computer enhances the process of learning.
If there are more computers, no more will students have to wait in line while scanning the room for an empty chair and computer.. No longer will they have to sit and wait while an outdated computer struggles to follow their commands. Having more new and faster computers available will enable students to finish their work more quickly.
The more computers are used in society, the more colleges will depend on them as a tool of teaching and learning. Making computers more available to students facilitates their learning process by making the process easier, more interesting, more engaging, and in the process enhancing their quality of life.
From the passage we can infer that .
| A．present computers in the college cannot meet the demands of the students |
| B．computers in the college will be updated to meet the students’ demands soon |
| C．the college has the responsibility to help the students to prepare for their future |
| D．it is also necessary to expand the college bookstore by using part of the donation |
In paragraph 4，the author mainly wants to tell us that .
| A．computers are beneficial to students’ academic(学业) success |
| B．computers are helpful to students competition for success |
| C．students find it convenient to do assignments by using computers |
| D．students wish to use the money to buy more advanced computers |
Which of the following shows the organization of the passage?
CP: central point SP: sub-point(次要点) P: point C: conclusion
Louis Armstrong had two famous nicknames. Some people called him Bagamo. They said his mouth looked like a large bag. Musicians often called him Pops, as a sign of respect for his influence on the world of music.
Born in 1901 in New Orleans, he grew up poor, but lived among great musicians. Jazz was invented in the city a few years before his birth. Armstrong often said, “Jazz and I grew up together.”
Armstrong showed a great talent for music when he was taught to play the cornet (短号) at a boy’s home. In his late teens, Armstrong began to live the life of a musician. He played in parades, clubs, and on the steamboats that traveled on the Mississippi River. At that time, New Orleans was famous for the new music of jazz and was home to many great musicians. Armstrong learned from the older musicians and soon became respected as their equal. In 1922 he went to Chicago. There, the tale of Louis Armstrong begins. From then until the end of his life, Armstrong was celebrated and loved wherever he went. Armstrong had no equal when it came to playing the American popular song.
His cornet playing had a deep humanity and warmth that caused many listeners to say,“Listening to Pops just makes you feel good all over.” He was the father of the jazz style and also one of the best-known and most admired people in the world. His death, on July 6, 1971, was headline news around the world.
Armstrong was called Pops because he .
| A．looked like a musician |
| B．was a musician of much influence |
| C．showed an interest in music |
| D．traveled to play modern music |
The third paragraph is developed .
| A．by space | B．by examples |
| C．by time | D．by comparison |
Which statement about Armstrong is true?
| A．His tale begins in New Orleans. |
| B．He was born before jazz was invented. |
| C．His music was popular with his listeners. |
| D．He learned popular music at a boy’s home. |
Which would be the best title for the text?
| A．The Invention of the Jazz Music |
| B．The Father of the Jazz Style |
| C．The Making of a Musician |
| D．The Spread of Popular Music |
Photographs are everywhere. They decorate the walls of homes and are used in stores for sales of different goods. The news is filled with pictures of fires, floods, and special events. Photos record the beauties of nature. They can also bring things close that are far away. Through photos, people can see wild animals, cities in foreign lands, and even the stars in outer space. Photos also tell stories.
Reporting the news through photos is called photojournalism. At times photojournalists tell their stories through a single picture. At other times, they use a group of pictures to tell a story. Each picture is like a chapter in a book, which can do more than record the facts. It can also be a strong force for social change.
Jacob Riis was among the first photojournalists. He took pictures of parts of New York City where the poor lived. Riis believed that poverty caused crime, and he used photos to help him prove his point. A few years later, the photos of small children working in factories by Lewis Hine shocked the public. Hine’s pictures helped bring about laws to protect such children.
Hundreds of pictures may have to be taken in order to get one or two really good photos. It takes science to have the photo come out clearly and art to make a photo that has a good design and expresses feeling. Photojournalists make an actual record of what they see. A photo, however, can be both a work of art and an actual record. It can record an important event as a beautiful or exciting picture.
As historical and artistic documents, photos can become more important over time. Today photojournalists still have their pictures appear in newspapers and magazines. They also publish(发表) them in books and on the Internet.
The underlined word “They” in the first paragraph refers to .
| A．beauties | B．photos |
| C．goods | D．events |
The photos of the small children by Hine show us that photos .
| A．are also works of art |
| B．are popular ways of reporting news |
| C．often shock the public |
| D．can serve as a force for social change |
What can we learn from the passage?
| A．News with pictures is encouraging |
| B．Photos help people improve. |
| C．News photos mean history in a sense. |
| D．People prefer reading news with pictures. |
The text is mainly about .
| A．telling the story through pictures |
| B．decorating the walls of homes |
| C．publishing historical papers |
| D．expressing feeling through pictures |
We all need a vacation, whether with the entire family or your significant other. Unfortunately, many of us will not be able to follow through with vacation plans. But now, there is an alternative that is catching on (流行起来) rather quickly and it is called a “Staycation”. A staycation is just what it sounds like, a vacation but you stay at home. It might not sound interesting, but you can turn it into a fun and relaxing getaway.
Tell family and friends your plans. In their eyes you are truly on vacation and they only need to contact you in case of an emergency.
Go outside; don’t let the kids sleep all day. Go out and birdwatch, go fishing, explore the parks and nature, take in all you can of the outside world. You can even have a relaxing day at the beach, soak in some sun, and let the kids go swimming.
Go on a picnic; have the kids fly kites. Bring some bubbles, and have a nice day with the wind blowing in your hair. Watch as the kids run and play and enjoy the beautiful outdoors.
Camping is another fun way to have a staycation. If you have a camping ground in your area, you can go camping for a day or two and show the kids how it is to live right in the heart of Mother Nature.
Just remember, it really doesn’t matter where you decide to go, whether home or away. As long as you create quality time with your family you can strengthen the bonds that may have been pushed aside during all the long stressful work hours. Time is the most important thing you can give to your husband, wife and kids, enjoying every moment together, and you will have lasting memories in your hearts.
What is mainly talked about in the passage?
| A．The popularity of a staycation. |
| B．The importance of a vacation. |
| C．Where to spend your vacation this year. |
| D．How to plan a staycation. |
You should tell family and friends your plans so that .
| A．they will fully support you |
| B．they will take care of your house |
| C．they will contact you only when necessary |
| D．they can help you make preparations |
Which of the following is NOT a good way to have a good staycation?
| A．To sleep at home all day. |
| B．To go out to watch birds. |
| C．To go to the parks. |
| D．To relax on the beach. |
What is the most important thing of taking a staycation?
| A．Spending quality time with your family. |
| B．Letting your kids learn about nature. |
| C．Giving your family relaxing time. |
| D．Getting away from stressful work hours. |
The underlined word “bonds” in the last paragraph can be best replaced by “ ”.
| A．friendship | B．health | C．links | D．circles |
Why do men die earlier than women? The latest research makes it known that the reason could be that men’s hearts go into rapid decline when they reach middle age.
The largest study of the effects of aging on the heart has found that women’s longevity may be linked to the fact that their hearts do not lose their pumping power with age.
“We have found that the power of the male heart falls by 20--25 percent between 18 and 70 years of age,” said the head of the study, David Goldspink of Liverpool John Moores University in the UK.
“Within the heart there are millions of cells that enable it to beat. Between the age of 20 and 70, one-third of those cells die and are not replaced in men,” said Goldspink. “This is part of the aging process.”
What surprises scientists is that the female heart sees very little loss of these cells. A healthy 70-year-old woman’s heart could perform almost as well as a 20-year-old one’s.
“This gender difference might just explain why women live longer than men,” said Goldspink.
They studied more than 250 healthy men and women between the ages of 18 and 80, focusing on healthy persons to remove the confusing influence of disease.
The team has yet to find why ageing takes a greater loss on the male heart, said Goldspink.
The good news is that men can improve the health of their heart with regular exercise. Goldspink stressed that women also need regular exercise to prevent their leg muscles becoming smaller and weaker as they age.The underlined word “longevity” in the second paragraph probably refers to ______.
| A．health | B．long life | C．aging | D．effect |
The text mainly talks about ______.
| A．men’s heart cells | B．women’s aging process |
| C．the gender difference | D．hearts and long life |
According to the text, the UK scientists have known that ______________.
| A．women have more cells than men when they are born |
| B．women can replace the cells that enable the heart to beat |
| C．the female heart loses few of the cells with age |
| D．women never lose their pumping power with age |
If you want to live longer, you should ___________.
| A．enable your heart to beat much faster |
| B．find out the reason for aging |
| C．exercise regularly to keep your heart healthy |
| D．prevent your cells from being lost |
We can know from the passage that __________.
| A．the reason why aging takes a greater loss on the male heart has been found out |
| B．scientists are on the way to finding out why the male heart loses more of the cells |
| C．the team has done something to prevent the male from suffering the greater loss |
| D．women over 70 could lose more heart cells than those at the age of 20 |
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