Q: Read the following article and answer the question. Article: When you were looking for a reliable,honest auto mechanic ,how did you find him?Before you went into that restaurant you recently tried,how did you know that it served great food?If you are like most people on the planet,you want to lower your risk of a big ugly surprise so you asked people you trust to refer to a business they trust. Marketers call this friendtofriend recognition of a business "wordofmouth" advertising. When you do a great job for your customer or a bad job,people are going to talk about your business. Unfortunately,because we humans seem to feel negative emotions more intensively than positive ones,we're more likely to tell more of our friends about bad experiences with a business than positive ones. Understand this:Customers believe their own experience. You can't make them believe that your company is wonderful when they felt they were treated badly. So,to get positive wordofmouth going for your business in this servicebased economy,you've got to do a really outstanding job for everyone,exactly. And when you do,you build a great reputation . That takes time. But it forms a close link with your customers in a way that no advertising and no promotional coupon ever could. The good news is that because there are so many different businesses chasing after your customers' money,people want to know whom they can trust. So people are going to be talking about you create a free sales force for your business---- an army of delighted customers who tell everyone that they know how good your company is to do business with. That's a great antidote to nonconfidence. Question: What is the main topic of this passage? Answer: | OPTIONS:
- A company can rely on its associates to survive.
- A person should rely on his friends for business.
- Advertising can make customers believe it's wonderful.
- A good name will bring you money.
A: A good name will bring you money.

Q: Read the following article and answer the question. Article: When I paid for the bicycle repair, the repairman told me, " No change, Professor Pan. We're friends." "I'd rather pay," I replied. "If it's free, I can't afford it." Chinese often refuse payment for professional services, insisting, "We're friends now!" But then they show up later to ask me to tutor them in English, or get them into an American university, and I wish I'd have just paid the 30 yuan I owed them in the first place. According to the Americans, "There's no free lunch," meaning that there's a price for everything, and I'm always looking around to figure out what this means. Many of our neighbors have given us fruit or flowers or costly teas, never asking anything in return. For years, a bicycle repairman has repeatedly refused to let me pay him. "Wait until you have something major to fix!" he insists. Chinese generosity is a real education for Americans like me, who would rather avoid social entanglements and just hand over the money. But cash can't make up for the greatest gift - friendship. When an American saw some of my friends sitting on bamboo stools under the trees, sipping tea, he said, "They must have nothing better to do." "Actually," I said, "they are professors, with plenty to do. But probably you're right in saying that, at this moment, they have nothing better to do. And neither do I." And I joined the group. We chatted about tea and Chinese cooking and how much my boys have grown since we arrived. One man said, "They were pocket-sized when you came here. Now they're taller than you. How time flies." How life flies. And Chinese are smart enough to share what they know they cannot keep. They freely give of their time, never too busy to help a friend. And they are teaching me, slowly, to both give and receive. So the next time someone says, "No charge. We're friends." I will thank them heartily. But if they show up later asking me to tutor them in English, I'll make sure they tutor my son in Chinese as well, because there's still no free lunch. Question: Generally, the author thinks that _ . Answer: | OPTIONS:
- Chinese are generous and always ready to help their friends
- Chinese are good at exchange of equal values
- Chinese are free enough to drink and chat with their friends
- Chinese are helpful but don't treasure time
A: Chinese are generous and always ready to help their friends

Q: Read the following article and answer the question. Article: Nature is full of color, from rainbows and roses to butterfly wings and peacock tails. Even the fruits and vegetables you eat have different colors: blue blueberries, red strawberries, green broccoli, and orange carrots. Plant and animals often use color to attract attention. The substances responsible for these colors belong to a class of chemical called antioxidants . Plants make antioxidant to protect themselves from the sun's ultraviolet(UV) light. Ultraviolet light causes chemicals called free radicals to form within plant cells. They can destroy parts of plant. Free radicals also have damaging effects on human beings. Some of these effects like wrinkled skin can be seen. The damage is caused by the free radicals attacking cells in our bodies. Certain cancers and heart disease are linked to free radicals. Our bodies have natural defences for fighting off free radicals. While we are young, our defences are pretty strong. However, they get weaker as we get older. The body's built-in defences can only go so far without extra help. The key to fighting free radicals with fruits and vegetables is to mix and match colors. It's like sunscreen for the inside of your body. Go for a range of very bright colors. Colorful foods contain hundreds of healthy chemicals not found anywhere else. Research into how chemicals in blueberries affect the brain's function in rats suggests that these chemicals may help our own brains work more efficiently. Don't just blame the sun. Ultraviolet light isn't the only source of free radicals. If you breathe polluted air such as smog, automobile exhaust , or wasted gas from a factory, you take in chemicals that also cause such damage. And, the body itself produces free radicals as it processes food. Question: Which of the following can not cause free radicals to form? Answer: | OPTIONS:
- Colorful food
- UV light from the sun
- Polluted air
- The body itself
A: Colorful food