2012雅思阅读模拟练习-2(5)

4. The molecules of alcohols and those of thiols look alike.

Questions 5-9

Complete the sentences below with words from the passage. Use NO MORE THAN THREE WORDS for each answer.

5. The hypothesis that we smell by sensing the molecular vibration was made by ______.

6. Turin’s company is based in ______.

7. Most scientists believed that our nose works in the same way as our ______.

8. Different isotopes can smell different when ______ weigh differently.

9. According to Audrew Horsfield， it is still to be proved that ______ could really occur in human nose.

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