Dont wash those fossils! Standard museum practice can wash away DNA. 1.Washing,brushing and varnishing fossils — all standard conservation treatments used by many fossil hunters and museum curators alike — vastly reduces the chances o... 详情>>
2020-08-13
Why did a promising heart drug fail? Doomed drug highlights complications of meddling with cholesterol. 1.The failure of a high-profile cholesterol drug has thrown a spotlight on the complicated machinery that regulates cholesterol levels.B... 详情>>
2020-08-13
Rogue theory of smell gets a boost Published online: 6 December 2006 Rogue theory of smell gets a boost 1.A controversial theory of how we smell,which claims that our fine sense of odour depends on quantum mechanics,has been given the thumb... 详情>>
2020-08-13
Food agency takes on industry over junk labels Felicity Lawrence Thursday December 28,2006 The Guardian 1.Consumers are to be presented with two rival new year advertising campaigns as the Food Standards Agency goes public in its battle w... 详情>>
2020-08-13
Suns fickle heart may leave us cold 25 January 2007 From New Scientist Print Edition. Stuart Clark 1.Theres a dimmer switch inside the sun that causes its brightness to rise and fall on timescales of around 100,000 years - exactly the same... 详情>>
2020-08-13
雅思阅读考前冲刺题盘点(9) How a Frenchman is reviving McDonalds in Europe A. When Denis Hennequin took over as the European boss of McDonalds in January 2004, the worlds biggest restaurant chain was showing signs of recovery... 详情>>
2020-08-13
雅思阅读考前冲刺题盘点(10) 1.British scientists are preparing to launch trials of a radical new way to fight cancer, which kills tumours by infecting them with viruses like the common cold. 2.If successful, virus therapy coul... 详情>>
2020-08-13
1. The American economic system is, organized around a basically private-enterprise, market- oriented economy in which consumers largely determine what shall be produced by spending their money in the marketplace for those goods and ser... 详情>>
2020-08-11
1. If its message were confined merely to information and that in itself would be difficult if not impossible to achieve, for even a detail such as the choice of the color of a shirt is subtly persuasive-advertising wound be so boring that... 详情>>
2020-08-11
1. The current passion for making children compete against their classmates or against the clock produces a two-layer system, in which competitive A-types seem in some way better than their B type fellows. [参考译文] 现在这种让孩子... 详情>>
2020-08-11