阅读表达

　　Many contemporary amateur athletes and swimmers would have broken world records if they had taken part in the first Olympic Games．Since then, records have fallen so much in track, field and swimming events as performance has greatly improved．If records fall, it is usually due to better equipment, training and diet; but recently improvements have begun to slow down．In Sydney, only three runners achieved Olympic bests with no world records．Some experts predict a ceiling for many events, such as 9.5 seconds for the 100 metres－Maurice Greene's current record is 9.79 seconds．

　　However, past predictions are nearly always wrong．All the levels of performance predicted in the 1930s had been reached by the 1970s．Ron Maughan, from Aberdeen University, believes that if more people around the world took part in organised sport, more records would have fallen．

　　One factor is the use of performance-enhancing drugs, or“doping”．Ben Johnson would still be the 100 metres world record holder if he had not been caught taking drugs．Other records remain doubtful, like Florence Griffith's 100 metres record back in 1998．Did she take drugs?If current Olympic champion, Marion Jones, took such drugs, she would probably have broken that world record more than once．

　　Unless we are careful,“gene-doping”will be the next big threat．

　　For medical purposes, scientists have already found ways to build muscle and increase strength through gene therapy．If gene therapy were used now, it would be almost impossible to find out．In the future, genetically-modified athletes might be able to run the 100 metres in 8 seconds or the marathon in under two hours．

　　However, if a generation of genetic monsters(转基因怪物)were created, it would show that the whole point of sport has been lost．

　　It would be much better to forget the records and return to the original Olympic spirit－taking part is _______________．

1．What's the best title for the passage?(within 10 words)

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2．Which sentence in the passage is the closest in meaning to the following one?

The employment of “gene-doping” can hardly be discovered at present．

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3．Please fill in the blank in the last paragraph with proper words or phrases to complete the sentence．(within 10 words)

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4．Do you think gene therapy is a good thing?Why or why not?(within 30 words)

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5．Translate the underlined sentence in the second paragraph from the bottom into Chinese．

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