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The researchers, led by Hwang Woo-suk, insist they cloned an Afghan hound, only to help investigate (研究) human disease, including the possibility of cloning stem cells (干细胞) for treatment purposes.
But others immediately renewed calls for a global ban on human reproductive cloning before the technology moves any farther.
“Successful cloning of an increasing number of species confirms the general impression that it would be possible to clone any species of mammals, including
humans,” said Ian Wilmut, a reproductive biologist at the University of Edinburgh who produced the first cloned mammal, Dolly the sheep, from an adult cell nearly a decade ago.
Researchers have since cloned cats, goats, cows, mice, pigs, rabbits, horses, deer, mules and gaur, a large wild ox of Southeast Asia. So far, efforts to clone a monkey or another primate with the same techniques have failed.
Uncertainties about the health and life span (寿命) of cloned animals continue to exsist; Dolly died at a young age in 2003 after developing cancer and arthritis.
Wilmut and others complimented Hwang’s achievement, reported Wednesday in the journal Nature. But they said politicians and scientists must face the larger issue — how to go on with the research without crossing the moral boundary of copying human life in the lab.
“The ability to use the technology is hopeful,” said Robert Schenken, president of the American Society for Reproductive Medicine. “However, the paper also points out that in dogs as in most species, cloning for reproductive purposes is unsafe.”
The cloned puppy was the lone success from more than 100 dogs implanted (嵌入)with more than 1,000 cloned embryos.
In a news conference in Seoul, the cloning team also condemned the reproductive cloning of humans as “unsafe and inefficient.” Human reproductive cloning already is banned in South Korea. Other nations, including the United States, are divided on whether to ban just human cloning or cloning of all kinds, including the production of stem cells.
43． An Afghan hound is a kind of ______.
A. cat B. dog C. cow D. goat
44． A ______ is a large wild ox of Southeast Asia.
A. horse B. deer C. mules D. gaur
45．Accrding to the passage, scientists haven’t been able to clone a ______ so far.
A. deer B. mule C. monkey D. mouse
46．The underlined word complimented is probably similar in meaning to ______.
A. praised B. doubted C. refused D. gave up
47．The cloning of human beings is banned in ______.
A. South Korea
B. the United States
C. both South Korea and the United States
D. neither South Korea nor the United States
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完形填空
When Mr. Smith was walking one evening, he met four of his old friends. To be polite, he invited them to come home with him to 1 . He hoped that they would say no, but 2 ,they quickly agreed and __3__ home with him.
Mr. Smith was a 4 man. There was never 5 in his house. He knew that there 6 very little for supper that night, 7 he did not know how to break away from his guests without being impolite so he let them come with him to 8 house. But when they came __9__ his front door he suddenly rushed forward, opened the door went in, closed it again and then locked it. He found __10__ in the kitchen and quickly told her 11 had happened.
Mr. Smith's guests were at first 12 Then they though he had perhaps gone ahead to get ready for the 13 . When nothing had yet happened for a few minutes, they began to 14 and to knock heavily at the door. After this had gone for some time Mr. Smith sent his wife to a window to talk to 15 . She told them that Mr. Smith 16 .
“What do you mean, woman?” shouted one of the men, “We came here a few minutes ago 17 and we saw him go into the house.”
Mr. Smith was now afraid that the noise 18 his friends were making would bring his neighbors around and that he would be 19 ,so he put his head out of the window and said to his friends, “This house has a 20 door, too. Perhaps Mr. Smith came in through the front door and went out through the other.”
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A. happily for him
B. luckily for him
C. to his joy
D. to his surprise
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完形填空
When Mr. Smith was walking one evening, he met four of his old friends. To be polite, he invited them to come home with him to 1 . He hoped that they would say no, but 2 ,they quickly agreed and __3__ home with him.
Mr. Smith was a 4 man. There was never 5 in his house. He knew that there 6 very little for supper that night, 7 he did not know how to break away from his guests without being impolite so he let them come with him to 8 house. But when they came __9__ his front door he suddenly rushed forward, opened the door went in, closed it again and then locked it. He found __10__ in the kitchen and quickly told her 11 had happened.
Mr. Smith's guests were at first 12 Then they though he had perhaps gone ahead to get ready for the 13 . When nothing had yet happened for a few minutes, they began to 14 and to knock heavily at the door. After this had gone for some time Mr. Smith sent his wife to a window to talk to 15 . She told them that Mr. Smith 16 .
“What do you mean, woman?” shouted one of the men, “We came here a few minutes ago 17 and we saw him go into the house.”
Mr. Smith was now afraid that the noise 18 his friends were making would bring his neighbors around and that he would be 19 ,so he put his head out of the window and said to his friends, “This house has a 20 door, too. Perhaps Mr. Smith came in through the front door and went out through the other.”
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A. happily for him
B. luckily for him
C. to his joy
D. to his surprise
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阅读下面短文，掌握其大意，然后从11-30各题所给四个选(A、B、C和D)中选出最佳选项.
Johny Conman was lazy. He had finished his education and was happy to sit in his room and 1 to the radio all day long 2 , he had been doing nothing for almost six months, which worried his father very much. One day Conman 3 that he had to do something.
“Johny, when I was your age, I was working and 4 my ten brothers and sisters. I want you to go out and get a 5 .”So than is what he did. In fact, in the next three months, John started ten jobs and was 6 from ten jobs, He explained to his father.
“They wanted me to work at 8 a.m. and told me to do all sorts of 7 things. A tiresome day to day job is not for me.”
Mr Conman decided to put his foot down.
“I don't 8 how you do it,” he said. “Either you earn some money or move out of the house. I give you one week.”
In the next 9 days Johny began to change. He still stayed in his room10 , but spent his time writing letters or reading through the newspapers. More and more post began to arrive for him. He 11 a new suit for himself and invited his parents to the theatre and 12 afterwards at the most expensive restaurant in town. When his 13 parents arrived home after their evening hour, a policeman was waiting at the front door.
“Johny Conman,”he said as he 14 him a piece of paper. “I'll see you in the court tomorrow.”
When they got inside, Johny told his parents everything, “When you told me to 15 some money, I decided to put an advertisement in the newspaper, saying 'New way to make money fast! Send me $5 and I'll tell you my 16 '. When I received the money I wrote back 17 people advertise a new money-making plan in the paper and wait for the 18 to send them money.”
John was fined $250 by the court and ordered 19 all the people back. As he left the court-house feeling very 20 , a newspaperman came up to him, “Young man, would you like to tell your story to my newspaper for $200?”
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A. to play games
B. to have fun
C. to have dinner
D. to sleep
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A senior United Nations Children’s Fund(UNICEF) official on May 29 praised China for its remarkable achievements in children’s welfare.
A. H. M. Farook, UNICEF’s operations area officer for China and Mongolia said that China “can be very satisfied to tell the whole world what can be done with limited resources to help its children to grow healthily and happily.”
China’s child population makes up one-fifth of the world’s total. “The reason behind the tremendous(巨大的) achievement is China’s long tradition of caring for children both at home and in society,” he said.
“What’s more is that Chinese people have always given special attention to children who are in special need.” The UN official made the remarks when addressing a group of 50 children and staff from the Beijing Children’s Welfare Home at the Shangri-la Hotel, Beijing.
The hotel invited the orphans to share snacks, sing, dance and play games at a park inside the hotel for a “Share the Sunshine” party, as a prelude(前奏) to celebrations to mark the Children’s Day.
The Beijing children’s Welfare Home, set up soon after New China was founded in 1949, has at present more than 400 children.
A leading official of the welfare institution said that the children live a happy life and that the agency spends 400—500 yuan a month for an average orphan. An average Chinese workers earned 440 yuan a month during the first quarter this year.
Gu Xiaojin, deputy secretary-general of the China Youth Development Foundation(CYDF), said people from all walks of life have contributed to the welfare of the Chinese children.
She said that CYDF set up the Project Hope in 1989, which calls on people across the country to donate money to help poor children to continue their schooling.
By the end of last year, she said, CYDF had collected nearly 700 million yuan in donations, which has helped the establishment of 2, 074 Hope primary schools and enabled more than 1. 25 million dropouts to return to school classrooms.
Three “Hope Stars” also attended the party. They were model teenagers chosen among students who are economically supported by the Project Hope to further their nine-year compulsory studies in the poverty-stricken regions. They will be torchbearers for the Chinese Team for the up coming Atlanta Olympic Games this year.
1.Children can grow healthily and happily as long as _______.
A. parents take good care of them both at home and in society
B. the whole society care for children as well as their parents
C. Schools and teachers pay much attention to the growth of children
D. Chinese people always give special attention to children who are in special need
2.Every year the Beijing Children’s Welfare Home spends _______ on the orphans
A. 1, 920, 000 yuan B. 2, 160, 000 yuan
C. Over 2, 400, 000 yuan D. 2, 200, 000 yuan or so
3.CYDF collected 700 million yuan with the purpose of _______.
A. reducing dropouts
B. helping homeless orphans
C. supporting the Chinese Team for the coming Atlanta Olympic Games
D. establishing 2, 074 Hope primary schools all over the country
4.We can infer from the text that _______.
A. Every Chinese child has its own special need, so we should pay special attention to each.
B. All the children in the poverty-stricken regions of China are too poor to go to school.
C. Ever since liberation. the Chinese Communist Party has been concerned about the growth of the younger generation.
D. With the help of UNICEF officials, there are no more dropouts in China.
5.It is possible that this passage was written in _______.
A. 1992 B. 1996 C. 1998 D. 2000
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