题目内容：

Seven years without a cold?

More and more people saying they just don't get colds anymore. They are using a new device made of pure copper, which scientists say kills cold and viruses. Doug Cornell invented the device in 2012. “I haven't had a single cold since then,” People were skeptical but EPA and university studies demonstrate repeatedly that viruses and bacteria die almost instantly when touched by copper. That’s why ancient Greeks and Egyptians used copper to purify water and heal wounds. Scientists say the high conductance (传导性) of copper disrupts electrical balance in a microbe (微生物) cell and destroys the cell in seconds.

So some hospitals tried copper touch surfaces like taps and door handles. This cut the spread of MRSA and other illnesses by over half, and saved lives. Colds start after cold viruses get in your nose, so the vast body of research gave Cornell an idea. When he next felt a cold about to start, he fashioned a smooth sheet copper and rubbed it gently in his nose for 60 seconds. “It worked!” he exclaimed, “The cold never got going.”

He asked relatives and friends to try it. They said it worked too so he patented CopperZap and put it on the market. Now tens of thousands of people have tried it. Nearly 100% of feedback says the copper stops colds if used within 3 hours after the first sign. Pat McAllister, age 70, received one for Christians and called it “one of the best presents ever.” “This little jewel really works,” People have used it on cold sores and say it can completely prevent outbreaks. It kills germs picked up on fingers and hands to protect you and your family. Copper even kills deadly germs that have become resistant to antibiotics.

CopperZap is made in America of pure copper. It has a 90-lay full money back guarantee. It is $ 69.95. Get $ 10 off each CopperZap with code USA3. Go to www.CopperZap.com or call toll-free 1-888-411-6114.

Buy once, use forever.

1.How does the CopperZap work?

A.The device is made in America of pure copper.

B.The device can cut the spread of MRSA and other illnesses.

C.Copper in the device kills all germs that have become resistant to antibiotics.

D.Copper in the device disrupts the electrical balance in a cell and destroys the cell.

2.What does the underlined word “It” refer to in Paragraph 2?

A.Body of research. B.His nose.

C.A. smooth sheet copper. D.A cold about to start.

3.How much will you pay if you want to buy a CopperZap with code USA3?

A.$79.95. B.$69.95.

C.$59.95. D.$49.95.

4.What’s the purpose of the passage?

A.To introduce us a new device.

B.To persuade people to buy the product.

C.To explain to us a way not to catch a cold.

D.To show the device is Useful against colds.