Thick dust rose and a large building collapsed. This was the scene in Zhu Zhou，Hunan Province on May 17. Nine people were killed and 16 injured.
Things were similar in the Sichuan earthquake. Thousands of people were buried in the ruins and lost their lives. What if we could have warned them?
People are always racking their wits to find a way of preventing buildings’ collapse. Better materials and technology help，but they are not a solution.
Just like humans，a building has its own life cycle from “birth” to “death”．If we know when a building is going to collapse，we can repair it in advance or get out of it before it falls. Now，scientists at the University of Illinois have developed a material that turns red before it breaks. The invention could be used in things like climbing ropes or bridge supports. The research was led by Nancy Sottos，a professor at the university’s Beckman Institute，and Douglas Davis，a graduate research assistant.
The secret behind the color—changing material is a type of molecule (分子)．A molecule is a group of atoms held together by chemical bonds. Imagine you and your friends standing in a circle，holding hands. Each person stands for one atom，your hands represent the bonds，and the entire circle represents a molecule. If one person lets go of his or her hands，the molecule changes color. The research team put the molecule into a soft material. When the researchers stretched the material，it turned bright red for a few seconds before it broke into two pieces. When they repeatedly stretched and relaxed the material，without breaking it，it only turned a little red.
The major problem is that light can get rid of the red color. When the team shone bright light on the molecule，the broken bond was fixed，and the color disappeared. Scientists have yet to do more research before the color—changing molecules can be used outside the lab.What does the passage mainly introduce?
| A．The collapse of a large building in Zhu Zhou, Hunan Province. |
| B．A type of molecule that can be put into a soft material |
| C．A material that turns red before it breaks. |
| D．A way of preventing building from collapsing. |
The underlined words “racking their wits” in the third paragraph mean ________.
| A．suffering a lot | B．collecting beyond imagination |
| C．losing a lot | D．thinking very hard |
Which of the following is a WRONG statement?
| A．Thousands of people died from the collapse of buildings in the Sichuan earthquake because they hadn’t been warned. |
| B．There is no building that will never collapse. |
| C．A new material has been applied to buildings to warn people of collapse. |
| D．A color—changing material can turn red before it breaks. |
What can we infer from the passage?
| A．The color—changing molecules are certain to be used outside the lab. |
| B．There will be less collapse with the help of the color—changing material. |
| C．The bright light may make the material’s warning system useless. |
| D．The problem caused by bright light will be solved by scientists soon. |
The 1900 house
The bowler family was one of more than 400 families who applied to 1900 house, a reality TV shout which took a typical family back a hundred years to se how people lived in the days before the internet, computer games and even electricity.
The bowler family spent three months in a London home without a telephone, computers, TV, or fast food. The bowlers wore clothes from 1900, are only food available in English at that time, and cooked their meals on a single stove. Paul bowler still went to work every day in a then uniform. The children changed their clothes on the way to and from school and their classmates didn’t know about then unusural home life. Joyce stayed at home, cooking and cleaning like a typical housewife of the time, though everything took three times as long.
So does Joyce think that people’s lives were better in the old days?
“I think people in the old days had just ad many troubles and worries,” Joyce said.
And I don’t think their life was better or worse, there were lots of things back then that
I’m happy I don’t have to deal with nowadays, but on the other hand life was simpler.” “We had a lot more time with our family, and it was hard being nice to each other all the time,” eleven-year-old Hilary said.
So what did the Bowler family miss most about modern life while living in the 1900 house?
Paul,39:” telephone and a hot shower”
Joyce,44:” a quick cup of tea from a kettle you could just turn on”
Hilary,11:” rock CD”
Joseph,9:” hamburger and computer games”
1.While the Bowler family was living in 1900 house,_____.
A the mother spent more time on housework
B the two children wore the then clothes for school
C they prepared their meals together on a stove
D they ate simple foods they had never seen
2. According to Paragraph 4, what’s Jovce’s opinion about life in 1900?
A There were fewer problems for the family
B Life was simpler but worse than it is now
C There were things she liked and disliked
D The family had more time to stay together
3.What would Hilary expect most from modern life in the three months?
A To play computer games B To make phone calls
C To listen to music D To chat on the Internet
Brave Frenchman Found Half-way Around the World
(NEW YORK) A French tourist highly praised for rescuing a two-year-old girl in Manhattan said he didn't think twice before diving into the freezing East River.
Tuesday's Daily News said 29-year who left the spot quickly after the rescue last Saturday.
He lifted the little girl out of the water after she fell off the bank at the South Street Scaport museum. He handed the girl to her father ,David Anderson, who had dive in after him.
"I didn't think at all," Duret told the Daily News. " It happened very fast. I reacted very fast."
Duret, an engineer on vacation ,was walking with his girlfriend along the pier(码头)when he saw something falling into the water .He thought it was a doll, but realized it was a child when he approached the river. In an instant ,he took off his coat and jumped into the water.
When he reached the girl, she appeared lifeless, he said . Fortunately, when she was out of the water, she opened her eyes.
Anderson said his daughter slipped off the bank when he was adjusting his camera. An ambulance came later for her, said Duret, who was handed dry clothes from cookers. Duret caught a train with his girlfriend shortly after.
The rescue happened on the day before he left for France. Duret said he didn't realize his tale of heroism he was leaving the next morning .
"I don't really think I'm a hero," said Duret. "Anyone would do the same ting."
| 1． |
why was Duret in NewYork?（） |
| 2． |
What did duret do shortly after the ambulance came?（） |
| 3． |
Who divide after duret into the river to save the little girl?（） |
| 4． |
When was duet most probably found to be the very hero?（） |
阅读下列四篇短文，从每小题后所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该选项涂黑。
| Ask Dr ? Jeffers |
This month Dr. Jeffers is answering questions about the human brain and how it works. |
| Dear Dr. Jeffers, One of my colleagues, Felix Moeller, told me that scientists are learning to use computer to 'read minds'. Is there any truth to this story/ -Jane Leon, New York, USA Dear Ms. Leon, Well, a lot of research is being conducted in this area, but so far, the brain scanning equipment and corresponding computer programs haven't been able to actually read thoughts. In one experiment, test subjects（受试者）were connected to scanning equipment and shown two numbers on a screen. They were then asked to choose between adding or subtracting（减）the two numbers. Using this method, researchers were able to follow brain processes and make the correct assumptions（假设）70 percent of the time. It's not quite mind reading, but it's certainly a first step. -Dr. J. |
|
| Dear Dr. Jeffers, My three-year-old son loves it when I dig my fingers into his sides and tickle （胳肢）him until he laughs uncontrollably. The other day I noticed him trying to tickle himself but he couldn't do it. Why not? -Glenn Lewis, Vancouver, Canada Dear Mr. Lewis, It's because of how the brain works. The brain is trained to know what to pay attention to and what to ignore. It causes us to ignore physical feelings we expect to happen, but it causes a mild panic reaction when there is an unexpected feeling. For example, you don't notice how your shoulder feels while you're walking down the street. But if someone comes up behind you and touches you lightly on the shoulder, you may jump in fear. It's that unexpected part that causes the tickle reaction. -Dr. J. |
| 1． |
What can we learn from the answer to the first question?（）
|
| 2． |
People laugh when tickled by others bedause the feeling is（）.
|
| 3． |
Who has got a little child according to the text?（）
|
| 4． |
According to the text, Jeffers is probably（）.
|
Batteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.
“To provide enough power, we need certain methods with high energy density(密度)”，said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope(放射性同位素) battery can provide power density that is much higher than chemical batteries.”
Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”
His new idea is not only in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”
Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the bat
tery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thic
kness of human hair.
1. Which of the following is true of Jae Kwon?
A. He teaches chemistry at MU.
B. He developed a chemical battery.
C. He is working on a nuclear energy source.
D. He made a breakthrough in computer engineering.
2. Jae Kwon gave examples in Paragraph 4_________.
A. to show chemical batteries are widely applied.
B. to introduce nuclear batteries can be safely used.
C. to describe a nuclear-powered system.
D. to introduce various energy sources.
3. Liquid semiconductor is used to _________.
A. get rid of the radioactive waste
B. test the power of nuclear batteries.
C. decrease the size of nuclear batteries
D. reduce the damage to lattice structure.
4. According to Jae Kwon, his nuclear battery _______.
A. uses a solid semiconductor
B. will soon replace the present ones.
C. cou
ld be extremely thin
D. has passed the final test.
5. The text is most probably a ________.
A. science news report B. book review
C. newspaper adD. science fiction story
Rae Armantrout, who has been a poetry professor at the University of California San Diego(UCSD) for two decades, has won the 2010 Pulitzer Prize in the poetry category for her most recent book, “Versed”.
“I’m delighted and amazed at how much media recognition that the Pulitzer brings, as compared to even the National Book Critics Award, which I was also surprised and delighted to win,” said Armantrout.
“For a long time, my writing has been just below the media radar, and to have this kind of attention, suddenly, with my 10th book, is really surprising.”
Armantrout, a native Californian, received her bachelor’s degree at UC Berkeley, where she studied with noted poet Denise Levertov, and her master’s in creative writing from San Francisco State University. She is a founding member of Language Poets, a group in American poetry that analyzes the way language is used and raises questions to make the reader think.
In March, she won the National Book Critics Circle Award for “Versed.”
“This book has gotten more attention,” Armantrout said, “but I don’t feel as if it’s better.”
The first half of “Versed” focuses on the dark forces taking hold of the United States as it fought the war against Iraq. The second half looks at the dark forces casting a shadow over her own life after Armantrout was diagnosed with cancer in 2006.
Armantrout was shocked to learn she had won the Pulitzer but many of her colleagues were not. “Rae Armantrout is a unique voice in American poetry,” said Seth Lerer, head of Arts and Humanities at UCSD.
“Versed”, published by the Wesleyan University Press, did appear in a larger printing than her earlier works, which is about 2,700 copies. The new edition is scheduled to appear in May.
1. According to Rae Armantrout, ____________.
A. her 10th book is much better
B. her winning the Pulitz
er is unexpected
C. the media is surprised at her works
D. she likes being recognized by her readers
2. Which of the following is true of Rae Armantrout?
A. She published a poetry textbook.
B. She used to teach Denise Levertov.
C. She started a poets’ group with others.
D. She taught creative writing at UC Berkeley.
3. What can we learn about “Versed”?
A. It consists of three parts.
B. It is mainly about the American army.
C. It is a book published two decades ago.
D. It partly concerns the poet’s own life.
4. Rae Armantrout’s colleagues think that she ____________.
A. should write more B. has a sweet voice
C. deserves the prize D. is a strange professor
5. What can we learn from the text?
A. About 2,700 copies of “Versed” will be printed.
B. Cancer made Armantrout stop writing.
C. Armantrout got her degrees at UCSD.
D. “Versed” has been awarded twice.