Look closely at ,your hands-are they clean? It doesn't matter how many times you was your hands. They're still crowded with microbes, which are also called "germs" or "bacteria". Microbes are everywhere. But don't worry-most microbes don't harm you. and many actually help you stay alive.
Now, scientists say the microbes that live on our hands could be used in a surprising way: fighting crime.
When police visit the scene of a crime, they often look for fingerprints to try to identifythe criminal. But according to a recent study, investigators could even use microbes to help break a criminal case.
Every person has his or her own set of microbes that live on their hands, according to scientists at,the University of:Colorado. That means the mix of different kinds of microbes on everybody's hand is unique-much like one's fingerprint.
The scientists wanted to know whether this microbe mix could be used as a new kind of fingerprint-especially in a crime scene where fingerprints might be hard to find. And policemen use forensics such as studying fingerprints to identify the criminal.
"Microbe fingerprints are harder to hide," said Noah Fierer, one of the scientists.
"You can't sterilize(为……杀菌) a surface just by wiping it off. "
His team compared the bacteria on the hands of 273 people with the bacteria found on each person's computer keyboard. For the study, the keyboards had been used only by the people who were being tested. The study showed that the mix of microbes from each per- son's hands matched the mix of microbes on that person's keyboard. The scientists were easily able to tell the 273 people apart-just by looking at their keyboards.
But there are a lot more than 273 criminals. Other scientists wonder whetherthe microbe fingerprint can really be that useful.
Fierer agrees that scientists have a lot more work to do before the microbe fingerprint will be a useful tool．According to the passage, microbes on people's hands_____
| A．do more harm than good | B．are easy to get rid of |
| C．are almost the same | D．might help find crimes |
The underlined word "forensics" in Paragraph 5 probably refers to________.
| A．the scientific test used by police |
| B．a new kind of fingerprint |
| C．a kind of bacteria'in people's hands |
| D．a kind of newly invented keyboard |
What did Fierer's team find through the study?
| A．They found the criminal among the 237 people. |
| B．They could tell who had used which computer. |
| C．Computer keyboards couldn't keep people's microbe fingerprints. |
| D．People's characters could be identified by the keyboards they used. |
We can learn from the passage that ______.
| A．your microbes may give you away |
| B．scientists will come to a clear conclusion soon |
| C．many scientists think microbe fingerprints useless |
| D．the microbe fingerprint has been used in many cases |
The main idea of the passage is about_____.
| A．the importance of fingerprints | B．how to clean our hands |
| C．the usefulness of microbes | D．different germs on our hands |
【2015·北京卷】A
The Boy Made It!
One Sunday, Nicholas, a teenager, went skiing at Sugarloaf Mountain in Maine. In the early afternoon, when he was planning to go home, a fierce snowstorm swept into the area. Unable to see far, he accidentally turned off the path. Before he knew it, Nicholas was lost, all alone! He didn’t have food, water, a phone, or other supplies. He was getting colder by the minute.
Nicholas had no idea where he was. He tried not to panic. He thought about all the survival shows he had watched on TV. It was time to put the tips he had learned to use.
He decided to stop skiing. There was a better chance of someone finding him if he stayed put. The first thing he did was to find shelter form the freezing wind and snow. If he didn’t, his body temperature would get very low, which could quickly kill him.
Using his skis, Nicholas built a snow cave. He gathered a huge mass of snow and dug out a hole in the middle. Then he piled branches on top of himself, like a blanket, to stay as warm as he could.
By that evening, Nicholas was really hungry. He ate snow and drank water from a nearby stream so that his body wouldn’t lose too much water. Not knowing how much longer he could last, Nicholas did the only thing he could- he huddled(蜷缩) in his cave and slept.
The next day, Nicholas went out to look for help, but he couldn’t find anyone. He followed his tracks and returned to the snow cave, because without shelter, he could die that night. On Tuesday, Nicholas went out to find help. He had walked for about a mile when a volunteer searcher found him. After two days stuck in the snow, Nicholas was saved.
Nicholas might not have survived this snowstorm had it not been for TV. He had often watched Grylls’ survival show. Man vs. Wild. That’s where he learned the tips that saved his life, In each episode(一期节目)of Man vs. Wild, Grylls is abandoned in a wild area and has to find his way out. When Grylls heard about Nicholas’ amazing deeds, he was super impressed that Nicholas had made it since he knew better than anyone how hard Nicholas had to work to stay alive.What happened to Nicholas one Sunday afternoon?
| A．He got lost. | B．He broke his skis. |
| C．He hurt his eyes | D．He caught a cold |
How did Nicholas keep himself warm?
| A．He found a shelter. | B．He lighted some branches. |
| C．He kept on skiing. | D．He built a snow cave. |
On Tuesday, Nicholas _____.
| A．returned to his shelter safely |
| B．was saved by a searcher |
| C．got stuck in the snow |
| D．staved where he was |
Nicholas left Grylls a very deep impression because he _____.
| A．did the right things in the dangerous situation |
| B．watched Grylls’ TV program regularly |
| C．created some tips for survival |
| D．was very hard-working |
B
What Theresa Loe is doing proves that a large farm isn't prerequisitefor a modern grow-your-own lifestyle. On a mere 1/10 of an acre in Los Angeles, Loe and her family grow, can（装罐）and preserve much of the food they consume.
Loe is a master food preserver, gardener and canning expert. She also operates a website, where she shares her tips and recipes, with the goal of demonstrating that every has the ability to control what's on their plate.
Loe initially went to school to become an engineer, but she quickly learned that her enthusiasm was mainly about growing and preparing her own food. "I got into cooking my own food and started growing my own herbs (香草) and foods for that fresh flavor,"she said. Engineer by day, Loe learned cooking at night school. She ultimately purchased a small piece of land with her husband and began growing their own foods.
"I teach people how to live farm-fresh without a farm," Loe said. Through her website Loe emphasizes that "anybody can do this anywhere." Got an apartment with a balcony （阳台）? Plant some herbs. A window? Perfect spot for growing. Start with herbs, she recommends, because "they're very forgiving." Just a little of the herbs "can take your regular cooking to a whole new level," she added. "I think it's a great place to start." "Then? Try growing something from a seed, she said, like a tomato or some tea."
Canning is a natural extension of the planting she does. With every planted food. Loe noted, there's a moment when it's bursting with its absolute peak flavor. "I try and keep it in a time capsule in a canning jar," Loe said. "Canning for me is about knowing what's in your food, knowing where it comes from."
In addition to being more in touch with the food she's eating, another joy comes from passing this knowledge and this desire for good food to her children: "Influencing them and telling them your opinion on not only being careful what we eat but understanding the bigger picture," she said, "that if we don't take care of the earth, no will."
| 1． |
The underlined word "prerequisite" (Pare. 1) is closest in meaning to "______".
|
| 2． |
Why does Loe suggest starting with herbs?
|
| 3． |
According to Loe, what is the benefit of canning her planted foods?
|
| 4． |
What is the"the bigger picture" (Para. 6) that Loe wishes her children to understand?
|
Want Kids to Eat Better? Get Them Cooking
Cooking programs and classes for children seem to positively influence children's food preferences and behaviors, according to a recent review. And, although the review didn't look at long-term effects of such programs, the findings suggest that such programs might help children develop long-lasting healthy habits.
This research comes at a time when childhood obesity（肥胖） rates have been rising rapidly. More than one-third of adolescents in the United States were obese in 2012, according to the U.S. Centers for Disease Control and Prevention (CDC). This trend has been caused, at least in part, by a significant decrease in the amount of meals that people consume at home since the 1980s, according to background information in the study.
Cooking education programs, such as Food Explorers, teach children about new healthy foods and how to prepare them. They also stress the importance of eating five fruits and vegetables every day. A volunteer parent explains a new food to the group, and the kids make something based on the lesson, such as fruit or vegetable salad. Depending on the program, kids may be sent home with information about healthy foods to bring to their parents, the review explained.
The study team reviewed eight other studies that tested different types of cooking education programs. Children in these classes were between 5 and 12 years old, according to the review. The goal of the study team was to learn more about developing an efficient program to encourage healthy food choices that last a lifetime. The study found that it is particularly important to expose kids to healthy foods on a number of occasions. This makes them feel comfortable with the new foods, which helps them build healthy habits.
The study stressed the importance of getting parents involved in（参与） their children's eating habits. Parents who are unable to enroll their kids in a cooking class can achieve similar benefits by having their kids help them while they prepare meals at home. Children are more comfortable at home, which makes them more receptive to new foods because they will make the connection to a positive experience.What can we infer from the second paragraph?
| A．Eating out frequently causes obesity. |
| B．Childhood obesity is totally caused by eating habit. |
| C．Childhood obesity rates have been rising rapidly since 2012 |
| D．Food consumption has decreased significantly since the 1980s. |
On cooking education programs, ________.
| A．children learn how to prepare foods from their parents |
| B．children will learn how to cook in the company of their parents |
| C．children may learn information unknown to their parents |
| D．children focus more on cooking skills than on information about healthy foods |
Which of the following is true according to the study?
| A．Parents should let their kids cook independently at home. |
| B．A greater willingness to try new foods helps building healthy habits. |
| C．Children who participate in cooking programs are less likely to become obese. |
| D．Children who take cooking courses are more likely to choose fruits and vegetables as adults. |
Which of the following categories does this passage belong to?
| A．Education Systems |
| B．Science and Technology |
| C．Parent-child Relationship |
| D．Public Health Research |
What Theresa Loe is doing proves that a large farm isn’t prerequisite for a modern grow-your-own lifestyle. On a mere 1/10 of an acre in Los Angeles, Loe and her family grow, can（装罐）and preserve much of the food they consume.
Loe is a master food preserver, gardener and canning expert. She also operates a website, where she shares her tips and recipes, with the goal of demonstrating that every has the ability to control what’s on their plate.
Loe initially went to school to become an engineer, but she quickly learned that her enthusiasm was mainly about growing and preparing her own food. “I got into cooking my own food and started growing my own herbs (香草) and foods for that fresh flavor,”she said. Engineer by day, Loe learned cooking at night school. She ultimately purchased a small piece of land with her husband and began growing their own foods.
“I teach people how to live farm-fresh without a farm,” Loe said. Through her website Loe emphasizes that “anybody can do this anywhere.” Got an apartment with a balcony （阳台）? Plant some herbs. A window? Perfect spot for growing. Start with herbs, she recommends, because “they’re very forgiving.” Just a little of the herbs “can take your regular cooking to a whole new level,” she added. “I think it’s a great place to start.” “Then? Try growing something from a seed, she said, like a tomato or some tea.”
Canning is a natural extension of the planting she does. With every planted food. Loe noted, there’s a moment when it’s bursting with its absolute peak flavor. “I try and keep it in a time capsule in a canning jar,” Loe said. “Canning for me is about knowing what’s in your food, knowing where it comes from.”
In addition to being more in touch with the food she’s eating, another joy comes from passing this knowledge and this desire for good food to her children: “Influencing them and telling them your opinion on not only being careful what we eat but understanding the bigger picture,” she said, “that if we don’t take care of the earth, no will.”
The underlined word “prerequisite” (Pare. 1) is closest in meaning to “______”.
| A．recipe | B．substitute |
| C．requirement | D．challenge |
Why does Loe suggest starting with herbs?
| A．They are used daily. |
| B．They are easy to grow. |
| C．They can grow very tall |
| D．They can be eaten uncooked |
According to Loe, what is the benefit of canning her planted foods?
| A．It can preserve their best flavor |
| B．It can promote her online sales |
| C．It can better her cooking skills |
| D．It can improve their nutrition |
What is the“the bigger picture” (Para. 6) that Loe wishes her children to understand?
| A．The knowledge about good food |
| B．The way to live a grow-our-own life |
| C．The joy of getting in touch with foods |
| D．The responsibility to protect our earth |
Language is a major problem for the European Union (EU) . The Treaty (条约) of Rome ,which created the organization that finally became the EU, stated that each country’s language must be treated equally. The original six countries had only three languages between them: French, German and Dutch/Flemish. However, there are now 15 countries in the EU, with a total of 12 languages. EU documents must be translated into all these languages, and at official meetings the speeches must be translated into all the languages by interpreters.
All this translating is very expensive and time-consuming. It is said that nearly half of all employees of the EU are engaged in translating documents and speeches and nearly half of the EU’s administrative (管理方面的) costs are spent on this task. In the near future it is probable that several more countries, most of them having their own languages, will join the EU, thus making the situation even worse.
The problem is just cost; there are practical difficulties as well. With 12 languages, there are 132 possible “translation situations” that might be needed. It is often difficult to find people in the right place at the right time who can translate from, for example, Danish into Greek, or Dutch into Portuguese, at a high professional standard.
In practice the problem has been less serious by the use of English in many contacts between EU officials , since almost all of them speak some English. However, any move to reduce the number of official languages (perhaps to four or five) would be a blow to the pride of the smaller countries. Another commonly suggested solution is to make English the official language for all EU business. However, this is strongly resisted by powerful member countries like France and Germany .
The organization that finally became the EU _______.
| A．included 132 languages |
| B．was set up by the Treaty of Rome . |
| C．started with three countries . |
| D．was started by France and Germany . |
What’s the main purpose of this passage?
| A．To show that the problem cannot be solved . |
| B．To criticize the European Union for inefficiency . |
| C．To find out a problem and show how serious it is. |
| D．To give a solution to a problem . |
The writer mentions “Danish into Greek” as an example of _______.
| A．a situation that occurs often. |
| B．a situation that might be difficult to deal with . |
| C．languages easily being interpreted. |
| D．one of the 12 situations that requires an interpreter |
The writer suggests that if the number of official languages was reduced, _______.
| A．Only languages which are easy to translate would be used officially. |
| B．The smaller member countries would be pleased . |
| C．the EU would not know which official languages to choose . |
| D．Countries whose languages were not used officially would be unhappy . |
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