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恐龙灭绝 Seth Shostak，astronomer at the SETI Institute，is attending a week-long conference on life in the universe being held in Australia. He wraps up his coverage of the conference with this report. Although bioastronomy is about...

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美国肥胖 America is one of the richest, most progressive countries in the world. Shouldnt it be one of the healthiest too? Maybe it should，but the sad truth is that Americans are some of the unhealthiest people in the world. Even thou...

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蚂蚁的智慧 Ants live eight to ten weeks，passing through a four-stage life cycle一egg，larva，pupa and adult. the workers are sterile females and do the labour of the nest; the larger ones (the soldiers) defend the colony. At certa...

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学术腐败 the termscientific fraudis used to describe intentional misrepresentation of the methods，procedures，or results of scientific research. Behavior characterized as scientific fraud includes fabrication，falsification，or pla...

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考拉 Koalas fur is thick soft and pleasant to touch. Ears have long white hairs on the tips. Koalas can live as long as 17 years，however males life expectancy is less than 10 years(due to injuries during fights，dogs and cars)Females g...

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日本塔 Visitors to Kyoto and Nara, Japans ancient capitals，invariably retain in their memories the evocative silhouette of a wooden pagoda一at times towering gracefully above the tiled rooftops of an old neighborhood，at times rising...

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厄尔尼诺现象 EI Nino is a disruption of the ocean-atmosphere system in the tropical Pacific having important consequences for weather around the globe. Among these consequences are increased rainfall across the southern tier of the US...

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You should spend about 20minutes on Questions 27-40, which are based on Reading Passage1 below. Educational Information on Magnet Therapy A. The useof magnets as therapeutic devices is not new. It has been practiced for atleast six thousand...

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The Study of Laughter Humans dont have a monopoly on laughter, says Silvia Cardoso. A behavioral biologist at the State University of Campinas, Brazil, she says its a primitive reflex common to most animals: even rats laugh. She believes th...

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TV Addiction A In 1977，Winn argued In The Plug-in Drug that television has properties of addiction. Researchers have been intrigued by this idea, but few have tried to study it systematically. Anecdotal accounts and speculation comprise m...