The technique can lead to new ways to produce medicines, the researchers from the universities of Istanbul and Hawaii hope.
As part of an effort to improve treatments for life-threatening illnesses, a team of scientists have created rabbits that glow(发光) in the dark.
Their efforts produced two rabbits out of a litter of eight that went from being a normal, fluffy white to glowing green in the dark. The rabbits were born at the University of Istanbul as part of a collaboration（合作） between scientists from universities in Turkey and Hawaii.
The rabbits glow to show that a genetic manipulation technique can work efficiently, though the specific color is more cosmetic than scientific. "The green is not important at all – it's just a marker to show the experiment can be done successfully," said University of Hawaii associate professor Stefan Moisyadi.
To produce the glowing effect, researchers injected jellyfish DNA into a mother rabbit's embryos. Those altered embryos（胚胎）. Those altered embryos were then inserted back into the mother. Similar experiments have resulted in glowing cockroaches and cats.
Eventually, the researchers hope the technique can lead to new ways to produce medicines, Moisyadi said. “The final goal is to develop animals that act as barrier reactive to produce beneficial molecules in their milk that
can be cheaply extracted, especially in countries that can’t afford big pharma plants that make drugs, that usually cost $1bn to build, and be able to produce their own protein-based medication in animals," Moisyadi said.
The rabbits are expected to have the same life span as their non-glowing counterparts（副本）, but Moisyadi said he understands people can object to this kind of experimentation involving live animals.
"To the people against, I say: think about, what are the benefits and what are the injuries?" Moisyadi said. "And if the benefits outweigh the injuries, let's go with the benefits."
Moisyadi, a native of Turkey who is now with the University of Hawaii, started developing the project in 2006, and researchers are now waiting to see if pregnant sheep produce similar results.
1.Moisyadi’s attitude towards this kind of experiment is .
A. doubtful.
B. indifferent.
C. supportive.
D. objective.
2.How did glowing effect produce?
A. It was just the result of genetic selection.
B. Put a light into a mother rabbit’s embryos.
C. Injected glowing cats DNA into a mother rabbit’s embryos.
D. Injected Jellyfish DNA into a mother rabbit’s embryos.
3.The final goal of this research is .
A. To make animals cuter.
B. To make nights brighter.
C. To produce all kinds of glowing animals.
D. To produce beneficial molecules in animals’ milk.
4.What can we learn according to the passage?
A. The life span of glowing rabbits is much shorter than that of non-glowing ones.
B. The glowing rabbits were born only at the University pf Hawaii.
C. Scientists have created glowing cockroaches and cats before.
D. Three rabbits out of eight can glow in the experiment.
难度: 中等查看答案及解析
Something about the four World Famous Statues
The Little Mermaid
The statue The Little Mermaid sits on a rock in the Copenhagen harbor at Langelinie in Denmark. Tourists visiting for the first time are often surprised by the relatively small size of the statue. The Little Mermaid is only 1.25 meters high and weighs around 175kg. designed by Edvard Eriksen, the statue was erected in 1913 to commemorate（纪念）the fairy tale The Little Mermaid. The poor lady has lost her head several times but each time it has been restored. Copenhagen officials announced that the statue may be moved further out in the harbor, as to avoid further vandalism(故意破坏)and to prevent tourists from climbing onto it.
David Statue
David is a masterpiece of Renaissance sculpture sculpted by Michelangelo from 1501 to 1504. The 5.17 meter marble statue portray the hero after his victory over Goliath, Michelangelo chose to represent David before the fight contemplating(沉思)the battle yet to come. To protect it from damage, the famous statue was moved in 1873 to the Accademia Gallery in Florence in Italy, where it attracts many visitors. A replica was placed in the Piazza della Signoria, at the original location.
Great Sphinx
Located at the Giza Plateau near Cairo in Egypt, the Great Sphinx is one of the largest and oldest statues in the world, but basic facts as who was the model for the face, when it was built, and by whom, are still debated. It is the largest monolithic(独块巨石的)statue in the world although it is considerably smaller than the pyramids around it. Despite conflicting evidence and viewpoints over by the years, the traditional view held by modern Egyptologists at large remains that the Great Sphinx was built in approximately 2500 BC by the Pharaoh Khafre, the supposed builder of the second pyramid at Giza.
Statue of Liberty
The Statue of Liberty, a gift from the people France to celebrate the centennial of the signing of the United States Declaration of Independence, stands upon Liberty Island and is one of the most famous symbols in the world. It represents a woman wearing a stole, a radiant crown and sandals, trampling a broken chain, carrying a torch her raised right hand and a tabula ansata tablet in her left hand. The construction of the statue was completed in France 1886 until the jet age, it was often one of the first glimpses of the United States for millions of immigrants.
1.Which description is about “The Little Mermaid”?
A. It has lost its head several times.
B. It is a gift from the French people.
C. It is the largest monolithic statue in the world.
D. It is designed by Michelangelo from 1501 to 1504.
2.What do we know about the Great Sphinx from the passage?
A. It located at Cairo in Egypt.
B. It was Pharaoh Khafre’s tomb.
C. It was built by Egyptian designer—Edvard Eriksen.
D. It is the largest monolithic statue in the world.
3.What can we infer from the passage?
A. The passage is a health report.
B. The passage is a science report.
C. The passage is most probably taken from a travel magazine.
D. The passage is most probably taken from a fashion magazine.
难度: 简单查看答案及解析
BEIJING, China ---Pollution in China remains very serious as the country's rapid economic growth brings new environmental problems, a minister said Saturday.
Vice Environment Minister Zhang Lijun said China has made progress on environmental protection, but admitted that its rapid economic growth over the past decade has had a negative effect on the environment.
"Our rapid economic development has continuously brought our country new environmental problems, particularly dangerous chemicals, electronic waste and so on. These environmental pollutants (污染物) bring new problems and affect human health," Zhang told a news conference.
He said that emissions(排放)of traditional pollutants remain high and some areas have failed to meet government standards.
China has pledged to continue reducing emissions this year of three key air pollutants--- ammonia nitrogen, sulfur dioxide and nitrogen oxide. The government has also promised to bring down demand for chemical oxygen---a measure of water pollution by l.5 percent from the 2010 levels.
In the last five years, there were 912 "environmental emergencies" involving heavy metal pollution, including several well-publicized instances of mass contamination, Zhang said. Thousands of children were affected by lead poisoning in several provinces in 2009 and 2010 because they lived near metal smelters or battery factories.
The minister noted that rapid development in the next five years would increase the need for China to improve environmental protection and shift to a more sustainable(可持续的) model of economic development from its dependence on industries which consume huge quantities of energy.
China is focusing on clean energy, including solar, wind and nuclear power, as one way to reduce its dependence on coal, which generates three-quarters of its electricity and is also used for winter heating in northern cities. China also hopes the strategy will reduce its demand for oil and gas and increase economic growth and jobs.
Zhang told reporters there was no plan to adjust China's overall strategy for nuclear development but he said Beijing will learn lessons from Japan after a violent earthquake resulted in a radioactive leak(放射能泄露).
"Some lessons we learn from Japan will be considered in the making of China's nuclear power plans," he said. "But China will not change its determination and plan for developing nuclear power."
1.How can China do to solve the pollution problem according to the minister?
A. China must slow its economic development.
B. China require to ask industries to meet government standards.
C. China should tell people how to protect the environment.
D. China require to transform tis economic development model.
2.What is the meaning of the underlined word "generates" in Paragraph 6?
A. needs
B. transports
C. reduces
D. produces
3.Which of the following is true according to the passage?
A. Dangerous chemicals are one of the traditional pollutants.
B. The use of clean energy will help increase job opportunities.
C. Coal is used more in northern cities than in southern cities.
D. Rapid economic growth helps to improve the environment.
4.What do the last four paragraphs mainly talk about?
A. China’s economic development will shift to depend on clean energy.
B. China will learn to use nuclear power from Japan.
C. Japan had a violent earthquake recently.
D. Rapid economic growth caused some problems in China.
难度: 困难查看答案及解析
Getting on the school bus, like the possible dangers around the home, getting on the school bus can also bring its own set of dangers. There are several important safety measures that parents should be aware of when it comes to bus safety.
Parents should always make sure that someone is taking charge of children at the bus stop to make certain clear ground rules which are in place and are being followed—particularly rules that forbid horseplay in and around the street.
Teach children to ask the bus driver for help in picking up anything they may have dropped around the bus, as children getting dropped articles are often hit by the bus or another vehicle because they are not seen by the bus driver or by oncoming traffic.
Children should be asked to take five large steps away from the bus when they get it off, and make sure that the bus driver can see you and look you directly in the eyes to signal it is OK to cross the street. It is still very important that children also look both ways as they cross the street.
Inform children that they must never speak to any stranger who talks with them first and that they must never accept a ride from any person unless their parents tell them directly that it is OK. Teach kids that adults should ask other adults for help, not kids. If an adult asks a kid for help, that child should get another adult.
If for any reason a child feels uncomfortable or unsafe at the bus stop they need to bring it to a parent’s or caregiver’s attention.
Remember, planning ahead is always the best safety measure. Follow these rules and your family will be off danger!
1.The underlined word “horseplay” in Paragraph 2 has the similar meaning as__________.
A. stay in order
B. chase each other
C. play game on horse
D. ride a horse around
2.Which of the following should a child do when his book falls around the bus?
A. Pick it up quickly by himself.
B. Turn to the bus driver.
C. Keep silent without telling others.
D. Ask other children for help.
3.What is the main point of Paragraph 5?
A. It’s about tips on how to avoid dangers from strangers.
B. It’s about tips on how to deal with strangers on the road.
C. It’s about tips on how to escape from dangerous strangers.
D. It’s about tips on how to refuse to talk with strangers.
4.The best way to make your children safe is__________according to the passage.
A. warning them of various dangers
B. asking them to go to school by bus
C. sending them to school yourself
D. making preparations in advance
难度: 中等查看答案及解析
Sheila Green was married 12 years ago.1.When her youngest child reached school age, she decided to go back to work.2.Her salary could make a difference between a financial struggle and a secure financial situation for her family. Sheila also felt bored and frustrated in her role as a homemaker and wanted to be more involved in life outside her home.
However, Sheila was worried about her children’s adjustment to this new situation. She arranged for them to go to stay with a woman nearby after school each afternoon.3.While a problem seemed to appear between Sheila and her husband Sandy. When Sheila was at home all day, she was able to clean the house, go grocery shopping, wash the clothes, take care of the children and cook two or three meals each day.4.
Now the same things need to be done, but Sheila has only evenings and early mornings to do them.5. Sandy is accustomed to sitting down and reading a paper of watching TV until dinners is ready. This is exactly what Sheila feels like doing, but someone has to fix dinner and Sandy expects it to be Sheila. Sheila is becoming very angry at Sandy’s feels that everything should be the same as it was before Sheila went back to work.
A. They seemed to be happy with the arrangement.
B. Sheila thought that she should contribute to the household finances.
C. Her oldest child studies in a school near her home.
D. Both Sheila and Sandy are tired when they arrive home at 6 p.m.
E. She has three children and lives in a suburb outside Columbus, Ohio.
F. Sheila does not only work in a company, but also the housework.
G. She was very busy, of course, but she succeeded in getting everything done.
难度: 中等查看答案及解析
I grew up in a small town. My father________chickens and ran a construction company. I was________10 years old when my dad gave me the__________of feeding the chickens and________up the stable（笼子）. He believed it was
____for me to have those jobs to_________responsibility. Then, when I was 22, I found a job in Natchbill at a country music club_________the Natchbill Palace, I washed__________and cooked from 4:00 pm to 9:00 pm and then ______to sing until 2:00 in the morning. It wasn’t long before I became known________a singing cook.
I had been rejected so many times by record__________that it was hard not to be discouraged. One night, a
______executive(主管) from a company named Warner Brothers Records came to hear me sing. When the show was_______, we sat down and talked and after she left, I said to__________it was one more rejection. A few weeks later, my manager received a phone call—Waner Brothers_________ to sign me to a record deal._________after, I release(发行) my first record in June 1986. It_________over 2 million copies.
My best efforts had gone into every job I’ve ever held. It was the_________of responsibility that made me feel like a man. Knowing that I had done my________filled me with pride. I still feel that way today, even though I have become a well-known_________.
1.A. had B. used C. devoted D. raised
2.A. still B. down C. only D. inside
3.A. pleasure B. sorrow C. happiness D. responsibility
4.A. keeping B. watching C. cleaning D. looking
5.A. healthy B. important C. initial D. humorous
6.A. learn B. grasp C. gain D. govern
7.A. seen B. run C. called D. found
8.A. clothes B. tables C. chairs D. dishes
9.A. jumped up B. flew over C. went on D. observed at
10.A. so B. such C. very D. as
11.A. companies B. shops C. factories D. clubs
12.A. man B. woman C. boy D. manager
13.A. over B. on C. towards D. forward
14.A. herself B. myself C. yourself D. himself
15.A. made B. did C. wanted D. refused
16.A. Long B. Early C. Sometimes D. Soon
17.A. bought B. stuck C. sold D. simplified
18.A. step B. road C. phenomenon D. sense
19.A. best B. better C. good D. well
20.A. recorder B. singer C. writer D. dancer
难度: 困难查看答案及解析
A few months after1.(return) to the U.S. from Germany, I2.(take) part in a college course in French. Since I had learned to speak German well in Germany, I thought it might be interesting3.(begin) studying another language.4.the first class, a teacher asked us to do a pronunciation exercise, in which he would say a word5.two in French, and each student would do6.(they) best to copy. When my turn came, he7.(keep) having me say8.(many) words, and I finally asked him why. “I find it great9. (funny),” he explained. “In 25 years of teaching at school, it’s the first time I have heard10.American speak French with a German accent.”
难度: 中等查看答案及解析
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（＼）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1.每处错误及其修改均限一词;
2.只允许修改10处，多者（从第11处起）不计分。
There are bound to be question marks over our future, so we often think of future. We often wonder that the world will like a hundred years’ time.
Think of space. Perhaps a permanent station on the moon will have been set up. Perhaps people will be able to visit the moon as tourist. Cheap rockets for space travel will have been developed, permitted long journeys through the solar system. When that time come, people will be taking holidays in space and visiting another planets. Great progress will have been made in medicine, too.
Pollution have been controlled in a hundred years’ time.
All the world will have been developed—even Antarctica. We will have used up many of the earth’s land to build our cities, therefore floating the cities will have been built. The Japanese have already plans in this kind. And there will be cities under the sea.
难度: 困难查看答案及解析
假定你是李华，你的好朋友Dickon 就如何提高写作水平征求你的意见。你给他写了一封信，给出了两个建议：一个是建议他学好习惯用语和句子结构并用他们造句；另一个是建议他多阅读和背诵一些好文章。
注意：
1. 词数100左右，
2. 为使行文连贯，可以适当增加内容；
3. 信的开头和结尾已给出，但不计入总词数。
Dear Dickon,
______________________________________________________
Yours,
Li Hua
难度: 中等查看答案及解析