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　　考生手头都会积攒一些雅思阅读注意事项方面的教材，但北京新航道雅思老师发现，考生并不能够充分的利用这些材料。进过调查发现，考生存在两个困惑：是不知道选择什么样的备考材料，第二就是不知道如何利用复习资料。所以就算你积攒再多资料，也是收效甚微。下面北京新航道学校雅思老师就为大家提供一些雅思阅读方面的材料，供大家参考学习。

　　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 thumbs up by a team of physicists.

　　2.Calculations by researchers at University College London (UCL) show that the idea that we smell odour molecules by sensing their molecular vibrations makes sense in terms of the physics involved.

　　3.That's still some way from proving that the theory, proposed in the mid-1990s by biophysicist Luca Turin, is correct.But it should make other scientists take the idea more seriously.

　　4."This is a big step forward," says Turin, who has now set up his own perfume company Flexitral in Virginia.He says that since he published his theory, "it has been ignored rather than criticized."

　　5.Most scientists have assumed that our sense of smell depends on receptors in the nose detecting the shape of incoming molecules, which triggers a signal to the brain.This molecular 'lock and key' process is thought to lie behind a wide range of the body's detection systems: it is how some parts of the immune system recognise invaders, for example, and how the tongue recognizes some tastes.

　　6.But Turin argued that smell doesn't seem to fit this picture very well.Molecules that look almost identical can smell very different — such as alcohols, which smell like spirits, and thiols, which smell like rotten eggs.And molecules with very different structures can smell similar.Most strikingly, some molecules can smell different — to animals, if not necessarily to humans — simply because they contain different isotopes (atoms that are chemically identical but have a different mass).

　　7.Turin's explanation for these smelly facts invokes the idea that the smell signal in olfactory receptor proteins is triggered not by an odour molecule's shape, but by its vibrations, which can enourage an electron to jump between two parts of the receptor in a quantum-mechanical process called tunnelling.This electron movement could initiate the smell signal being sent to the brain.

　　经过老师课堂经验发现，雅思阅读对考生来说就是不能合理分配阅读题干的时间和答题时间，这还需要同学在平日里多加练习，以便应试速度，老师提醒大家，成绩绝非一朝一夕之事，勤奋练习才能收益。最后祝你考试顺利。

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