大学英语大学英语大学英语四级(CET4)2009年6月大学英语四级(CET-4)考试真题

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• 21What did Cerling’s team produce in their research、

  A.A map showing the regional differences of tap water.

  B.A collection of hair samples from various barber shops.

  C.A method to measure the amount of water in human hair.

  D.A chart illustrating the movement of the rain system.

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• 22What is the practical value of Cerling’s research、

  A.It helps analyze the quality of water in different regions.

  B.It helps the police determine where a crime is committed.

  C.It helps the police narrow down possibilities in detective work.

  D.It helps identify the drinking habits of the person under investigation.

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