As the saying goes, "An apple a day keeps the doctor away." That's because this healthy food choice is supposed to be full of nutrients. The apple at the supermarket, though, might be so o1d that it has lost many of its nutrients. But soon there might be a way to check the quality of fruit by scanning it.
Scientists at Food+Future coLAB have come up with the idea of a handheld spectrometer(分光仪) that scans food. The machine will work by shining infrared(红外线的)light on a piece of produce. By measuring how chemicals in the fruit or vegetable take in the light, the scanner can recognize the food's chemical makeup.
"The machine can tell you exactly how old an apple is, how many calories it contains, what nutrients are present inside it, and even small differences in taste," Greg Shewmaker of Food+Future coLAB recently said.
For the new machine to be useful to consumers, researchers first need to create a database that contains possible chemicals for a particular type of fruit, like an apple, for example. Scientists will need to scan lots of pieces of produce to collect this data. The information collected will allow the scanners to tell customers the quality of fruit.
Once consumers know what's inside an apple, they can decide if they want to buy it. Knowing fruit quality may also affect how a store prices produce. "We can price produce based on the nutritional value," Shewmaker explained.
Food+Future coLAB has already created a working model of its machine. It says you may see one in your local supermarket within the next few years. Then deciding whether you've picked the healthiest fruit will be just a quick scan.
1.Why does the author mention the saying about apple at the beginning?
A. To prove that the apple is full of nutrients.
B. To introduce the topic of the fruit scanner.
C. To advise people to keep healthy by eating apples.
D. To state that the apple is the most tasty among fruits.
2.What do we know about the spectrometer?
A. It is powered by infrared light.
B. It is not useful in many customers' eyes.
C. It can help customers decide which fruit to buy.
D. It can improve the quality of fruit and vegetables.
3.According to Shewmaker, what's a spectrometer's influence on a store?
A. It makes a store more attractive.
B. It provides price reference for produce.
C. It enriches customers' knowledge about food nutrition.
D. It creates a database about the chemical makeup of fruit.
4.What would be the best title for this text?
A. The Fruit Scanner B. The Priced Fruit
C. How to Scan Fruits D. How to Pick Fruits
Helping and supporting others may be key to living a longer and healthier life, according to a new research from the University of Bagel in Switzerland. The findings published in the journal Evolution and Human Behavior, show that grandparents who care for their grandchildren enjoy longer lifespans. So do old people who care for others within their social networks.
Using data from the Berlin Aging Study, the researchers analyzed the longevity(寿命) and caregiving habits of more than 500 old people between the ages of 70 and 103. The study compared grandparents who acted as occasional caregivers with those who did not. It also compared these grandparents with old adults who did not have grandchildren but cared for people within their social networks.
Those grandparents who did not play the role of attending to grandchildren were more likely to have died within just five years of the testing period. While those old adults who provided, support to their family lived for an extra seven years on average and those provided support to their social networks lived for an extra four years on average.
Although the new study only focused on old adults, it's safe to assume that the health benefits of helping and taking care of others also reach those of all ages. However, it's important to note that too much caregiving often has just the opposite effect. There's a clear link between too much caregiving and a number of negative physical and mental health consequences.
1.How many groups of old people are involved in the study?
A. Two. B. Three.
C. Four. D. Five.
2.What does the research show?
A. Old people are more likely to support others.
B. Grandparents live longer than childless old adults.
C. Supporting others prevents diseases of old patients.
D. Helping others properly has a good effect on health.
3.What does the last paragraph imply?
A. Reducing earegiving can avoid bad health.
B. It's a good quality of all ages to be helpful.
C. Caregiving is not always beneficial to health.
D. Mental disorder is often caused by much caregiving.
People who report news sometimes find themselves in the news. This is especially true for foreign correspondents(记者), who risk their lives to bring us important stories from dangerous parts of the world. To learn more about the life of a foreign correspondent, we interviewed Tim Craig, who has covered the conflicts in Afghanistan and Iraq.
Q1: What draw you personally to dangerous places?
Tim Craig (TC): Experiencing problems that still exist in the world, seeing the struggles that soldiers face to keep peace, and the calamity that people meet during the war, and gaining a better understanding of how people from different countries live.
Q2: What do you like about your job?
TC: I like being able to talk to lots of different people about their problems and concerns. Sometimes the job can make you sad. You have to talk to kids who don't get enough to eat, or to someone whose mother or father was killed. But then I get to try to help these people by writing about their lives and problems.
Q3 : Do you worry about your own safety? How do you deal with that?
TC: Yes, I do worry, but I try not to think about it all the time. In Pakistan, many places are still safe enough for me to travel to without having to worry a lot about being injured, killed or kidnapped(绑架). There are, however, some places where I have to think about my safety all the time. Generally, it's best to travel with someone else so that we can help each other if something goes wrong. In dangerous places,. I also try not to stay in one spot for too long.
Q4: What are the most important qualities or skills a foreign correspondent needs?
TC : Being independent and able to quickly make decisions, being a good planner in order to reach places that may be hard to get to by car or plane, and being a good listener.
1.What do we know about Tim Craig?
A. He-suffers a lot during the war.
B. He covers news in foreign areas.
C. He works for world peace with soldiers.
D. He once helped look after homeless children.
2.What does the underlined word "calamity" in Paragraph 3 probably mean?
A. Dilemma. B. Confusion.
C. Misfortune. D. Embarrassment.
3.When does Tim Craig feel sad about his job?
A. When he tries to meet some requirements.
B. When he has to travel to dangerous places.
C. When he writes his experiences in the war.
D. When he learns about people's sufferings due to the war.
4.Which of the following can best describe the job of a foreign correspondent?
A. Challenging but significant. B. Dangerous and boring.
C. Demanding but profitable. D. Impressive and relaxing.
I watch from the wooden bench in my backyard as the water from the pipe quietly flows out onto the tomato plants. I watch the plants and rest easy, knowing the pipe is taking care of the plants. The drops soon seem to become rivers on the ground.
I see these red-brown ants, crawling(爬行) along around their home. What will happen when the water reaches the ants? Smelling the danger, these poor tiny creatures all run away from the water and rush back to their home. They spend their whole lives working together to create and make better things, but now they are facing the end of it all. I think this is just a reflection of the world. I keep watching as the water first attacks and then surrounds two ants. They struggle to stay floating as the water closes in on them, getting deeper and deeper. I try to get these two to come on my finger, but they refuse to let me save them. The water soon flows over them, as I remain helpless. Only then do they decide to climb onto my dirt-covered finger. Not until facing the moment of death would they trust one like me.
I check to see if they are alive, and both can move fine. Then I go to save other ants. However, the water washes everything away. How much I wish I could turn off this machine of death, but I cannot. I must complete my job.
It knocks me how much these little lives mean to me. When I was a small child, I would make a sport of killing them. Now, I can't hurt an insect, always thinking about what it would be like to be so small.
1.What is the ants' first reaction as the water approaches them?
A. They attempt to stop it.
B. They seek help at once.
C. They ignore it and continue to work.
D. They try to avoid the danger caused by it.
2.What can we infer from the underlined sentence in Paragraph 2?
A. Behind bad luck comes good luck.
B. Where there is a will, there is a way.
C. God helps those who help themselves.
D. Life is likely to be affected by setbacks.
3.How does the author help save the two ants?
A. He turns off the water pipe. B. He helps them float on the water.
C. He lets them climb onto his finger. D. He changes the direction of the water.
4.What's the author's attitude towards those ants now?
A. Sympathetic. B. Indifferent.
C. Favorable. D. Cruel.
假定你是李华，你的新西兰朋友Terry将从广州出发到北京进行为期一周的旅游，发邮件请你推荐合适的交通方式及北京的景点。请你回复邮件，内容包括：
1.推荐从广州到北京的交通方式；
2.推荐两到三处北京景点；
3.表达祝愿。
注意：1.词数100左右；
2.文章开头和结尾已给出，不计入总词数；
3.可以适当增加细节，以使行文连贯。
Dear Terry,
Knowing that you’re going to Beijing for vacation, I’m more than pleased to give you some advice.
______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours
Li Hua
单句改错：每句一处错误，在原句上修改。每处错误仅涉及一个单词的增加、删除或修改。
增加： 在缺词处加一个漏字符号（∧）, 并在其下面写出该加的词。
删除： 把多余的词用斜线（＼）划掉；
修改： 在错的词下划一横线,并在该词下面写出修改后的词。
1.If we go on a trip abroad, we can broaden our horizons and gain knowledges we cannot get from books.
2.This is the high school attaching to Northeast Normal University.
3.Would you kind put the book back?
4.The teenagers have no trouble adapt to fully automated homes.
5.Electricity is too much a part of life that people often take it for granted.
