Not long ago , Richard Denniston found himself suffering the same pain that millions of other pet owners have faced . His little Scottish dog had a brain tumor（腫塊）and would soon die. Like others who faced the problem before him , Denniston just wanted to end his pet’s suffering . However , he took one step further.
Deniston , an expert who studies animals , collected a tiny skin sample from the dog and took it to his laboratory at Louisiana State University. There he cultivated it and froze it in liquid nitrogen.
From that idea , Denniston started a new technology .Denniston’s company will save pet’s DNA ＄500，plus a monthly storage fee of Us ＄10, until cloning becomes a reality .
Thanks mostly to the contribution of a California multimillionaire , that day may not be so far off.
“It could happen extremely soon if everything went on well.”says Mark Westhusin , a professor leading a dog cloning team . Most experts put successful dog cloning a year to five years down the road . The cost is bound to be expensive at first , but it would eventually drop to a few thousand dollars.
Since Dolly , the sheep which was first cloned in 1997 ,cattle ,goats ,mice and monkeys have been cloned in labs . Pets are likely to be next.
“I really believe that the technology is going to become available for many species in the near future ,”Denniston says .
1. After his pet died ,Richard Denniston_______.
A. did something more than the ordinary pet owners
B. did as other pet owners
C. did nothing but feel very sad
D.could not help feeling lonely without his dear pet
2. Richard Denniston_________in liquid nitrogen for an experiment.
A. was a doctor who put his dog
B. was an animal expert who put a piece of his dog’s skin
C.was an expert at collecting skin samples who then put them
D.took great interest in freezing things
3. The underlined word “cultivated ”in Para . 2 probably means_________.
A. bought B.discovered C.caught D.trained
4. Cloning will cost people_______.
A. a lot of money in five years .
B. much in the beginning and then be reduced to a thousand dollars.
C. much and then will surely be reduced to thousands of dollars.
D.much at first and then might be reduced to a few thousand dollars.
科目：高中英語 來源： 題型：單選題
查看答案和解析>>
科目：高中英語 來源：2012-2013學年湖南長沙縣實驗中學高三高考模擬（一）英語卷（解析版） 題型：其他題
Not long ago, many people believed that babies only wanted food and to be kept warm and dry. Some people thought babies were not able to learn things until they were five or six months old. But doctors in the United States now say babies begin learning on their first day of life.
A baby learns to get the best care possible by smiling to please her mother or other caregiver. This is how babies learn to connect and communicate with other people.
The researchers say this ability to learn exists in a baby even before birth. They say newborn babies can recognize and understand sounds they heard while they were still developing inside their mothers.
Experts say the first three years of a child’s life are the most intensive period of language and speech development. This is the time when the brain is developing. Language and communication skills are believed to develop best in an environment that is rich with sounds and sights. Experts say babies should repeatedly hear the speech and language of other people.
America’s National Institutes of Health says evidence suggests there are important periods of speech and language development in children. The ability to learn a language will be more difficult if these periods pass without early contact with a language.
The first signs of communication happen during the first few days of life, when a baby learns that crying will bring food and attention. Research shows that most children recognize the general sounds of their native language by six months of age. By that time, a baby usually begins to make sounds. These sounds become a kind of nonsense speech over time.
1.When does the author think babies begin to learn? (no more than 9 words, 2 marks)
2.Why do babies smile to please her mother or other caregiver? (no more than 9 words, 2 marks)
3.According to experts, how can babies’ language and communication skills develop? (no more than 8 words, 3 marks)
4.What does the author mainly tell us? (no more than 8 words, 3 marks)
查看答案和解析>>
科目：高中英語 來源：2014屆江西省南昌市高二下學期期中考試英語試卷（解析版） 題型：閱讀理解
When Boris left school，he could not find a job．He tried hard and pestered(糾纏)his relatives，but they had problems of their Own. He answered advertisements until he could not afford to buy any more stamps. Boris grew annoyed，then depressed，then a little hardened．Still he went on trying and still he failed．He began to think that he had no future at all.
“Why don’t you start your own business?” one of his uncles told him．“The world is a money-locker. You’d better find a way of opening it.”
“But what can I do?”
“Get out and have a look round,” advised his uncle in a vague sort of way．“See what people want；then give it to them，and they will pay for it.”
Boris began to cycle around the town and found a suitable piece of a waste ground in the end. Then he set up his business as a cycle repairer．He worked hard，made friends with his customers and gradually managed to build up his goodwill and profit．A few months later, he found that he had more work than he could deal with by himself．He found a number of empty shops but they were all no good：in the wrong position，too expensive or with some other snag(障礙). But at long last，he managed to find an empty shop on a new estate where there were plenty of customers but no competition.
Boris and his assistant taught themselves how to repair scooters and motor-cycles．Slowly but surely the profits increased and the business developed. At last，Boris had managed to open the money-locker and found bank notes and gold Coins inside．
1.Which of the following would be the best title for the passage ?
A．Goodwill is the key to success．
B．The world is a money-locker
C．No education, no future
D．Difficulty of starting a small business
2.Which of the following best describes Boris’ job hunting experience?
A．Surprising B．Encouraging C．Boring D．Disappointing
3.Boris start his career by .
A．cycling around the town
B．developing a waste ground
C．repairing cycles
D．buying empty shops
4.Boris finally chose an empty shop on a new estate because .
A．it was not so expensive
B．he had a lot of old customers there
C．he could make good use of his skills there
D．there were good opportunities there
5.We can infer from the last paragraph that Boris .
A．still couldn’t make good profits
B．set off in a successful career
C．found a lot of gold coins by accident
D．had great difficulty running his business
查看答案和解析>>
科目：高中英語 來源：2014屆廣東省東莞市高二3月月考英語試卷（解析版） 題型：閱讀理解
Most people around the world are right-handed. This also seems to be true in history. In 1799, scientists studied works of art made at different times from 1,500 B.C. to the 1950s. Most of the people shown in these works are right-handed, so the scientists guessed that right-handedness has always been common through history. Today, only about 10% to 15% of the world’s population is left-handed.
Why are there more right-handed people than left-handed ones? Scientists now know that a person’s two hands each have their own jobs. For most people, the hand is used to find things or hold things. The right hand is used to work with things. This is because of the different work of the two sides of the brain. The right side of the brain, which makes a person’s hands and eyes work together, controls the left hand. The left-side of the brain, which controls the right hand, is the centre for thinking and doing problems. These findings show that more artists should be left-handed, and studies have found that left-handedness is twice as common among artists as among people in other jobs.
No one really knows what makes a person become right-handed instead of left-handed. Scientists have found that almost 40% of the people become left-handed because their main brain is damaged when they are born. However, this doesn’t happen to everyone, so scientists guess there must be another reason why people become left-handed. One idea is that people usually get right-handed from their parents. If a person does not receive the gene(基因) for right-handedness, he / she may become either right-handed or left-handed according to the chance and the people they work or live with.
Though right-handedness is more common than left-handedness, people no longer think left-handed people are strange or unusual. A long time ago, left-handed children were made to use their right hands like other children, but today they don’t have to.
1.After studying works of art made at different times in history, the scientists found _______.
A. the art began from 1,500 B.C.
B. the works of art ended in the 1950s
C. most people shown in the works of art are right-handed
D. most people shown in the works of art are left-handed
2.How many people in the world are left-handed now?
A．Less than one sixth. B．More than a half.
C．About 40%. D．The passage doesn’t tell us.
3.What is the hand for most people used to do?
A．It’s used to find or hold things.
B．It’s used to work with things.
C．It’s used to make a person’s eyes work together.
D．It’s the centre for thinking and doing problems.
4.According to the passage, which of the following is NOT true?
A．No one really knows what makes a person become right-handed.
B．Left-handedness is cleverer than right-handedness.
C．Today children are not made to use their right hands only.
D．Scientists think there must be some reason why people become left-handed.
5.The best title for this passage is _______.
A．Scientists’ New Inventions B．Left-handed People
C．Which Hand D．Different Brains, Different Hands
查看答案和解析>>
科目：高中英語 來源：同步題 題型：單選題
that three years in high school ________ not long. 查看答案和解析>>
湖北省互聯網違法和不良信息舉報平臺 | 網上有害信息舉報專區 | 電信詐騙舉報專區 | 涉歷史虛無主義有害信息舉報專區 | 涉企侵權舉報專區
違法和不良信息舉報電話：027-86699610 舉報郵箱：58377363@163.com
