the technology. He says the weapon he designed doesn’t change the function of a firearm at all. It just makes it safer. He is now working to add the fingerprint lock technology to a real gun. He says he expects to one day see his “smart gun” for sale next to other firearms.
The young man plans to spend the next year improving his fingerprint handgun. Then he will start college at one of the world’s top universities - the Massachusetts Institute of Technology.
24. Why does Kai Kloepfer try to invent the gun?
A. To prevent people from buying guns. B. To protect people’s life C. To limit functions of a gun D. To reduce power of a gun
25. The gun created by Kai Kloepfer is controlled by the owner’s fingerprint to ______.
A. keep it convenient to use B. make it safe to carry C. protect its owner from harm D. avoid being used by others 26. How is the progress of Kai Kloepfer’s gun invention?
A. It is being shown in a fair. B. It is under further research. C. It will soon come into the market. D. It needs designing once again. 27. What is Kai Kloepfer’s wish for the fingerprint gun?
A. It will bring enough money for him. B. It will replace traditional guns. C. It can be sold on the market. D. It can help forbid the use of guns.
C
Honesty is the best policy. We may agree that admitting mistakes and behaving in a genuine way is the right way to lead our lives, but is there something in our human nature that makes us immoral? For example, in some shops and car parks you can find an honesty box—a box where you pay for something by putting money in it—but it relies on you putting the right amount of cash in. This relies on people being honest and not trying to cheat but it does provide a temptation to get away with not paying the full amount．
Philip Graves, a psychologist, suggests that this temptation is part of our evolution. He says “ We have evolved with the ability to be dishonest. It's part
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