Question

Passage 24(2011 深圳，E)

   Look closely at your hands. Are they clean? It doesn’t matter how many times you wash your hands,tiny microbes (微生物) still stay on them. But don't worry. Most microbes don't harm you.

    Now scientists say the microbes on our hands could be used in a surprising way ： fighting crime. According to a recent study,microbes as well as fingerprints (指纹) could be used to identify the criminal.

    Everyone has his own set of microbes on the hands. That is to say,if you and your best friend were able to see and compare all the microbes on your hands,your hands probably would look different. Some microbes only show up on your hands while others live only on your friend’s hands.

    When you work on a computer,you leave the microbes from your hands on the key board. The scientists can easily tell the owner of the keyboard by looking at the microbes on it. Even if you don't leave your fingerprints behind,your microbes may give you away.

Noah Fierer,a scientist,says, “ You can only clean a fingerprint,but you can’t sterilize (使无菌) a surface just by wiping (擦) it off.M He says that scientists have a lot more work to do before the microbe is used as a useful tool.

1. According to the passage,       could be used to identify the criminal.

   A. fingerprints

   B. scientists’hands

   C. microbes

   D. fingerprints and microbes on peopled hands

2. Paragraph 3 tells us that       .

   A. our hands look similar

   B. the microbes will make the keyboard dirty

   C. we should compare our hands often

   D. we have our own sets of microbes

3. When you work on a computer,the microbes       .

   A. just stay on your hands

   B. also stay on the keyboard

   C. will do harm to you

   D. will disappear

4. From Noah Fierer we know that       .

   A. fingerprints are no longer useful in fighting crime

   B. microbes can’t be found on everyone^ hands

   C. unlike microbes fingerprints can be cleaned if people wipe them

   D. the microbe is used as a useful tool

5. What’s the best title of the passage?

   A. Microbes May Tell Who You Are

   B. Scientists Say Everyone Has Microbes

   C. Noah Fierer Does Research Into Microbes

   D. Fingerprints Help Catch Criminals

Answer 1

1. D 2. D 3. B 4. C 5. A

Passage 24

[语篇解读]本文是一篇科普文。近来，科学家发表声明指出每个人 手上都有自己特殊的微生物，你可以擦掉指纹，但擦不掉微生物。依据这点，可以用于侦破犯罪，找出凶手。

1. D细节理解题。第二段的最后一句话给出了答案。

A、C项都只说 出了一个，不全面。

2. D主旨大意题。本段的第一句话就是本段的中心句。之后就这句 话进行了详细分说。

3. B细节理解题。第四段的第一、二句给出了答案。

4. C细节理解题。最后一段Noah Fierer指出微生物不像指纹一样可以被擦掉，只有C项符合。

5. A主旨大意题。本文通篇讲述的是微生物某一方面的功能作用，只有A项符合。