Write a multi-choice question for the following article, with the given choices and answer: Article: American researchers say drinking tea may help strengthen the body's defense system against infection. Doctors at Brigham and Women's Hospital in Boston, Massachusetts, did the study. The team studied a chemical found in black, green, oolong and pekoe tea. This chemical is an amino acid called L-theanine. The scientists say it may increase the strength of gamma delta T cells. That's the letter T, not the drink. Gamma delta T cells are part of the body's defense. First, the researchers mixed some of these cells with antigens found in the amino acid . Antigens help the body react to infection. Then the scientists added some bacteria. Within twenty-four hours, the cells produced a lot of interferon, a substance that fights infection. Cells not mixed with the antigens did not produce interferon. In the second part of the study, eleven people drank five to six cups of black tea every day. Ten other people drank the same amount of instant coffee. That is dried coffee mixed with hot water. Two weeks later, and again two weeks after that, the researchers tested the blood of all twenty-one people. They also looked at what happened when they added bacteria to the blood cells. They found that the tea drinkers produced five times more interferon after they started drinking tea. The coffee drinkers did not produce interferon. Doctor Jack Bukowski led the study. He says the antigens added to the gamma delta T cells were responsible for the increased reaction to the bacteria. He says that the study also showed that the cells were able to remember the bacteria and fight them again the next time. Earlier research already has found that tea can help prevent heart disease and cancer. Doctor Bukowski says the new study must be repeated by more people. "If the findings prove to be true," he says, "then tea drinking might also help protect against bacterial infections." He says the amino acid L-theanine could be removed from the tea and used as a drug to strengthen the body's defenses. Options: A to add some bacteria to the blood cells B the body to produce more gamma delta T cells C the body to produce more interferon D to mix antigens with some of the cells in the body Answer: C the body to produce more interferon Question:
Ans: Tea may help strengthen the body's defense system because it helps _ .

Write a multi-choice question for the following article, with the given choices and answer: Article: It's a safe bet that a robot made your car and made your computer. Pretty soon, they could be making your bed and breakfast too. Increasingly, engineers are saying that robots are going to move out of research departments and into your home. Companies including General Electric are working on designs for small robots. Products like the Roomba, a robot that can clean floors, are flying off the shelves. What's behind this new robot revolution? It's partly a matter of technology. Devices that can recognize and respond to a human voice have been developed. There are now a few different ways for robots to move around. They can walk, crawl or ride on wheels. Robots are being made smaller and smaller. They are also becoming more and more able. A bigger part of the story is on the demand side. From the day the television remote control was invented, people around the world have searched for new ways to be lazy. Take into consideration that more and more people can afford robots, and the time seems ripe to introduce robots to the ordinary family. To be sure, robots that walk on two legs and talk like people are still a long way off. However, robots that do basic housework such as cleaning or gardening are sure to come out soon. One thing is certain--when these robots do come into our homes, it will change things forever. Options: A Science and technology. B Rapid development of companies. C Effective marketing means. D Great demand from the buyers. Answer: D Great demand from the buyers. Question:
Ans: Which plays a more important role in revolutionizing the robot?

Write a multi-choice question for the following article, with the given choices and answer: Article: First,you ought to know that I'm "only" fourteen.My mother points this out often.I can make my own decisions when I'm old enough to vote,she says.Second,I should tell you that she's right -- I'm not always responsible.I sometimes take the prize for grade-A dork .Take last weekend for instance.I was staying at Dad's,and I decided it was time I learned to drive.It was Sunday morning,7 A.M.,and I hadn't slept well.I'd been up thinking about an argument,which I'll tell you about in a minute.Well,nobody was up yet in the neighborhood,so I thought it couldn't hurt to back the car out of the garage and drive around the block.But Dad has a clutch car.The "R" on the shift handle was up on the left side,right next to first gear .I guess you can guess the rest. Dad's always been understanding.He didn't say,"Okay,little Miss Know-It-All,you can just spend the rest of the year paying this off," which is what Mom would have said.Instead,Dad worried about what might have happened to me.And that made me feel more guilty than anything.I think he'd be a better number-one caregiver,but I can't say things like that to Mom.To her,I have to say,"But Mom,Dad's place is closer to school.I could ride my bike," to which she replies,"Amy Lynn,you don't own a bike.Remember? You left it in the yard,and it was stolen.And you haven't got the patience to earn the money to replace it." Options: A doesn't want to grow old B thinks fourteen is old enough for some things C wishes she were older D thinks fourteen is an embarrassing age Answer: B thinks fourteen is old enough for some things Question:
Ans: In the first sentence,the writer used "only" to suggest that she _ .

Write a multi-choice question for the following article, with the given choices and answer: Article: Pingyao, in the center of Shanxi Province, is a famous historic cultural city of China and a world cultural heritage site . It's 90 kilometers south of Taiyuan on the Fen River. People lived in Pingyao during the New Stone Age. Its long period as a country government seat has left Pingyao with lots of historic buildings and sites, with a 2,700-year history. Ninety-nine of _ are under government protection, including Zhengguo Temple, Shuanglin Temple and Pingyao Ancient City. During the Ming and Qing Dynasties, businessmen organized commercial groups that did business nationwide. Shanxi Province had some of the most important ones and Pingyao was their center. In 1823, a store, known as Rishengchang(Sunrise Prosperity), traded in bank checks rather than in silver or gold coins. It was the beginning of modern Chinese banking. Branch banks were soon set up in major cities in China and other parts of Asia, leading to great development in Pingyao. Its Lacquer ware became well known. In Pingyao Ancient City are many traditional houses and commercial buildings, 3,797 of which are protected and more than 400 of which are in good condition. Not only do the houses in Pingyao show Shanxi's history and culture, but this large number is valuable for studying its history, customs, and ancient buildings and art. Most of these houses are still used as homes and shops of local people. In 1997, Ancient Pingyao City was listed in World Heritage List as " World Culture Heritage Site". Options: A agriculture B raising cattle C commercial trade D making gold coins Answer: C commercial trade Question:
Ans: During the Ming and Qing dynasties, Pingyao was a leading center in _ .