Answer Keys and Explanations

　　1. T 見第一段�！癵ive sth the thumbs up”為“接受”的意思。

　　2. F 見第三段�！癟hat's still some way from proving that the theory， proposed in the mid-1990s by biophysicist Luca Turin， is correct.”意即“現(xiàn)在尚無法證實生物物理學(xué)家Luca在九十年代中期提出的理論是否正確�！�

　　3. NG

　　4. T 見第六段“Molecules that look almost identical can smell very different — such as alcohols， which smell like spirits， and thiols， which smell like rotten eggs.”“identical”一詞是“完全相同”的意思。這句話是說alcohols和thiols的分子結(jié)構(gòu)看起來一樣，但是它們的味道卻相去甚遠。

　　5. Luca Turin 文章第二，三和七段均可看出Luca的理論即人類的鼻子是通過感覺氣味分子的震動來分辨氣味的。

　　6. Virginia 見第四段。

　　7. tongue 見第五段“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.”

　　8. the atoms 見第八段“This would explain why isotopes can smell different： their vibration frequencies are changed if the atoms are heavier.”

　　9. vibration-assisted electron tunneling 見第九段“"The question is whether this is possible in the nose，" says Stoneham's colleague， Andrew Horsfield.”句中的代詞“this”指句首的“vibration-assisted electron tunneling”。

　　10. Andrew Horsfield 見第九段結(jié)尾。

　　11.proper experimental verification 見第十三段。

　　12.their computed vibrations 見第十四段。