完形填空

　　Have you ever imagined that you could be cloned(克隆)like Dolly, the sheep, in the not too distant future?

　　The news that a human embryo(胚胎)has been 　　1　　 cloned for the first time has caused mixed reactions(反应)．

　　The 　　2　　 was carried out by scientists from the Advanced Cell Technology Inc(ACT), in Massachusetts, US．The group 　　3　　 the news on November 25．

　　This is not a cloned human being．“A 　　4　　 is alive, it walks, it breathes, ”said Jamie Grifo, an expert on the study of cloning at New York University School of Medicine．

　　“This is a set of cells in a lab that will be used to 　　5　　 someone's life．”

　　Such research could lead to treatment for 　　6　　 such as heart disease, AIDS and even cancer,　　　7　　 scientists．

　　Despite high hopes from other scientists, the news 　　8　　 concerns immediately from religious and political leaders．Several 　　9　　 in the US do not allow human cloning．President George W．Bush also made it clear that he is 　　10　　 any type of human cloning．However, the 　　11　　 at ACT said they have no interest at present in developing an early embryo into 　　12　　．

　　Animals have been cloned repeatedly since Dolly, the sheep, 　　13　　 in 1997．And there were no real technical 　　14　　 to stand in the way of scientists making a cloned human embryo．

　　This time the research group used traditional cloning technology with a human 　　15　　．　　16　　 it was given DNA from an adult cell, the egg began to 　　17　　．　　18　　 it was stopped from becoming a baby-at a stage in which it was 　　19　　 a ball of cells．The 　　20　　 technology has been used to clone sheep, cattle and monkeys．

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完形填空

　　People seem not to see that their opinion of the world is also a confession of character．

　　It was Mother’s Day, but the young mother was a little unhappy, because she was 800 miles away from her parents．In the morning she phoned her mother to 　　1　　 her a happy Mother’s Day, and her mother told her about the beautiful 　　2　　 in the garden．

　　Later that day, when she told her husband about the lilacs(丁香)，he said, “I know where we can find 　　3　　 that you want．Get the children and come on．” So they went, 　　4　　 down the country roads．

　　There on a small hill, they saw a lot of purple lilacs．The young woman ran quickly to 　　5　　 the flowers．　　6　　, she picked a few here and a few there．On their way home there was a smile on her face．

　　When they were 　　7　　 a nursing home, the young woman saw an old granny sitting in a chair．She had no children with her．They 　　8　　 the car and the young woman walked to the old woman, put the 　　9　　 in her hands, and smiled at her．The old granny 　　10　　 her again and again．She smiled happily, too．

　　　　11　　 the young mother came back to her car, her 　　12　　 asked her, “Who is that old granny?” “Why did you give our flowers to her?”

　　“I don’t know her,” their mother said．“But it’s Mother’s Day, and she has no children．I have all of you, and I 　　13　　 have my mother．Just think how much those flowers 　　14　　 to her．”

　　Hearing 　　15　　 their mother said, all the children were greatly 　　16　　．

　　As we know, everyone needs love．In our society, only more love is 　　17　　 to the people, 　　18　　 those who are in great 　　19　　, we will feel happy．　　20　　 by this, can we have a better life, a more humorous world．

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完形填空

　　New York－a team of engineers with expertise in high-rise design, collapse and blasts prevention will 　　1　　 why the damaged World Trade Center(WTC)buildings and part of the Pentagon broke into pieces after September 11's 　　2　　 attack, they will determine 　　3　　 future buildings can be designed to protect more lives 　　4　　 disasters．

　　A 　　5　　 of well-known engineers and members of the American Society of Civil Engineers will begin analyzing videotapes and photographs of the attack and the 　　6　　 collapse of the two 　　7　　 towers as soon as the rescue efforts come to an end, W．Gene Corely, senior vice president of Construction Technologies Laboratories Ince, said．

　　In addition to studying the crashes, the 　　8　　 and the collapses, the team will analyze modifications made at both sites－the World Trade Center's repair after the 1993 basement bombing there and the Pentagon's 　　9　　 renovation．

　　The team also will analyze the size, speed and fuel load of the speeding jets and their 　　10　　 as they cut through the buildings．

　　“From this, we 　　11　　 we will be able to determine some things that might be done differently if the building were designed to resist this type of attack and make some 　　12　　 related to 　　13　　 construction of buildings that might be subjected to this sort of attack, ”Corely said．

　　The WTC towers built in the late 1960s and early 1970s, were designed to withstand the impact of a Boeing 707 jetliner．But those plans did not 　　l4　　 in the effect of the fuel explosion 　　15　　 created fireballs at the giant towers．

　　Based 　　16　　 a preliminary review of the events, Corely said the WTC steel-framed towers collapsed not so much because of the impact but 　　17　　 the fire that followed．As the 　　18　　 from the fire rose, the steel weakened．

　　Although the towers once were the tallest buildings 　　19　　, their height was not a factor in their collapse, but the fire, Corely said．A shorter building, 　　20　　, would likely have resulted in fewer deaths．

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