雅思英语

★Sun’s fickle heart may leave us cold 25 January 2007 From New Scientist Print Edition. Stuart Clark1 There’s a dimmer switch inside the sun that causes its brightness to rise and fall on timesc...

How a Frenchman is reviving McDonald‘s in EuropeA. When Denis Hennequin took over as the European boss of McDonald’s in January 2004， the world‘s biggest restaurant chain was showing signs of ...

Food agency takes on industry over junk labels Felicity Lawrence Thursday December 28， 2006 The Guardian1. Consumers are to be presented with two rival new year advertising campaigns as the Food Sta...

1. Washing， brushing and varnishing fossils — all standard conservation treatments used by many fossil hunters and museum curators alike — vastly reduces the chances of recovering ancient DNA.2....

1. Washing， brushing and varnishing fossils — all standard conservation treatments used by many fossil hunters and museum curators alike — vastly reduces the chances of recovering ancient DNA.2....

The Triumph of UnreasonA. Neoclassical economics is built on the assumption that humans are rational beings who have a clear idea of their best interests and strive to extract maximum benefit (or “u...

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 machin...

Rogue theory of smell gets a boostPublished online： 6 December 2006Rogue theory of smell gets a boost1. A controversial theory of how we smell， which claims that our fine sense of odour depends on...

★How a Frenchman is reviving McDonald’s in EuropeA. When Denis Hennequin took over as the European boss of McDonald’s in January 2004， the world’s biggest restaurant chain was showing signs ...

★new weapon to fight cancer1. 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 ...