You are probably familiar with the saying：An apple a day keeps the doctor away. A recent research carried out by the Chinese University of Hong Kong may change the saying:
An apple a day may keep aging away.
The research chose fruit flies(果蝇), as they share many genes(基因)with humans. The fruit flies were either fed normally or had an apple extract(浓缩物) added to their diet.
It turned out that those fruit flies that were given apple extract lived about 55 days—five days longer than the flies that were normally fed. The research group also found it easier for the flies to walk，climb and move about as they aged.
According to the result, the researchers believed that the antioxidants(抗氧化剂) in the apple extract helped clean up dangerous chemicals(化学物质) that cause illnesses，as well as aging.
In another study，researchers examined diets of thousands of women. They discovered that those who regularly ate apples were 20 percent less likely to suffer heart illnesses and stroke.
The apples’ genetic code(遗传密码) was discovered recently. It allows scientists to develop nicer and healthier fruits. Researchers are already using the information to grow a kind of apples full of antioxidants that can keep eyes and joints healthy and protect humans against heart illnesses and cancer.
Apples that kill the desire(欲望) to eat could also be produced, with the first“extra-healthy’’apples on supermarket shelves within just four or five years.
The team that keeps studying apple DNA includes 100 scientists from five countries. Their research also suggests that around 65 million years ago, when dinosaurs began to die off the plant，which would finally become today’s apple tree, experienced a great genetic change. The number of many of its genes doubled. The extra genes allowed the apple to get used to worse conditions and go through a different development from peaches，strawberries and other related fruits.
【小题1】Why were fruit flies used for the research?

A．Apples produce chemicals that can change human genes.

B．Apples have antioxidants that kill chemicals that cause aging.

C．Apples are rich in vitamins that are needed in humans’bodies.

D．Apples produce chemicals that make apples taste more delicious.

Food waste has become a big problem in China.

Zhou Jinsong, a canteen(食堂) manager at Central South University, said that students produce over 12 barrels(桶) of leftovers every day — each barrel stands at one meter in height. Zhou’s canteen is just one of several on the campus.

According to Xinhua News Agency, the food wasted by Chinese people equates to about 50 million tons of grain every year, or 10 percent of the country’s total annual grain production. This food could feed another 200 million people. What students waste every year could feed over 10 million people. Students nowadays are well protected by their families and hardly know how hard farmers work to provide them with the food they eat.

“Since the 1980s, when Chinese gradually became richer, food waste has been a subject of debate. But things have hardly changed over the years,” said Yu Changjiang, a sociologist at Peking University. “It’s the Chinese way of showing respect to friends, often referred as Mianzi.”

But rather than tradition, huge public spending on government banquets(宴会) is also causing food waste, said Zhou Xiaozheng from the sociology department at Renmin University of China. “It’s the result of widespread reception meals at government levels. It is also important that everyone thinks about how they can do their best to reduce food waste.”

1.Which of the following statements is not the reasons for food waste?

A．Students hardly know farmers’ hard work on the farm.

B．The government spends a large amount of money on government banquets.

C．Leaving some food after a banquet is the Chinese way to show respect to guests.

D．The food in the college canteen is not delicious.

2.Where can we probably read this passage?

A．In a newspaper.                         B．In a traffic report.

C．On a health website.                     D．In a story book.

Most cities and towns in China have night markets every day. During the day, the streets are quiet（安静的）. At night, they become crowded（拥挤的） and lively（活跃的）. Usually people arrive at three or four in the afternoon. By 6:00, the streets are like rivers of people.
Night markets are fun places to shop in. You can buy clothes, shoes and many other things. If the price is too high, you can bargain with sellers（卖者）. You can also buy nice food. When you are hungry, you can sit down for a meal. Smelly tofu is popular, but it really smells bad.
The best thing is everything at night markets is cheap.
【小题1】What’s the meaning of “bargain”?

The Greens lived in a small town. Mr. Green worked in a factory. Mrs. Green didn’t go out to work. She cooked meals and did some ___46____ at home all day. Their child Bob studied in a middle school far from their____47____. And he took a bus to school every day. Mrs. Green ___48___ get up very early in the morning to cook breakfast for the family.
One morning, Mrs. Green didn’t feel well, ___49____ she told her son to get something to eat himself. The boy didn’t find any food in the fridge and went to school without breakfast. After Bob left home, Mrs. Green felt very ___50___about that. She got up and cooked ___51______delicious for her son. Then she went to the bus stop and took a bus to her son’s school. It was her first time to go to her son’s school. After thirty minutes, she ____52____ the bus. “I can’t find the ___53_____ to my son’s school. What shall I do?” she asked a man at the side of the road for help. “It doesn’t matter. Lie down in the middle of the ____54____and the policemen will take you there,” the man answered.
“I don’t think so. The doctors will come __55_the policemen,” said Mrs. Green.