题目
题型：不详难度：来源：
Animal experts in Croatia say a bear has learned how to trick people to let him in by knocking at the door.
They believe the 220- kilogram brown bear probably learned the trick while nudging (轻推) a door to get it to open.
Experts have a guess that the nudging was mistaken by the owners for knocking and that the bear, pleased by the result, repeated the trick.
The Loknar family from Gerovo in western Croatia said the bear had knocked at their door three times and they were now refusing to answer the door.
‘We jumped out of the window as he came in through the door and went into the kitchen to take some food for the first time.” Mum Nevenka Loknar told a reporter from a local newspaper. “I opened the door and saw him standing there and I didn’t believe my eyes at first, then I ran for it as he walked in as if it was the most normal- thing in the world.”
Bears are a common thing in the woods around here, but no one has ever heard of a bear that knocks at the door.
Mum Nevenka Loknar said, “The bear is so intelligent. It’s incredible. We’ve tried to put up lots of obstacles to stop him coming in, like a wire fence but he still gets through. I wouldn’t be surprised if he knew how to use wire cutters (钢丝剪).”
小题1:According to experts in Croatia, how did the bear learn the trick?
| A．By knocking at the door several times. | B．By accident. |
| C．By learning from the owner of a family. | D．By imitation. |
| A．Eating at the kitchen. | B．Knocking at the door. |
| C．Walking into the house. | D．Answering the door. |
| A．unusual | B．a troubling problem |
| C．common | D．an exciting experience |
| A．didn’t attack her family |
| B．knew how to use wire cutters |
| C．jumped across her wire fence three times |
| D．was clever at getting through the obstacles |
答案
小题1:B
小题2:C
小题3:A
小题4:D
解析
小题1:细节题。文章第三段可知专家认为熊是偶然学会的。
小题2:猜测词义题。I ran for it as he walked in as if it was the most normal- thing in the world.”it用来指代前面提到的he walked in.
小题3:推理题。根据文章倒数第二段Bears are a common thing in the woods around here, but no one has ever heard of a bear that knocks at the door.可知熊敲门是不同寻常的。
小题4:推断题。根据文章最后一段可知，为了防止熊进入房子，他们采取了很多方法，但是都不奏效。说明熊很聪明。
核心考点
试题【Animal experts in Croatia say a bear has learned how to trick people to let him 】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
Homework can put you in a bad mood (心情), and that might actually be a good thing. Researchers from the University of Plymouth in England doubted whether mood might affect the way kids learn. To find out the answer, they did two experiments with children.
The first experiment tested 30 kids. Some shapes (图片) were hidden inside a different, larger picture. The kids had to find the small shapes while sitting in a room with either cheerful or sad music playing in the background. To test their mood, the scientists asked the kids to point to one of five faces, from happy to sad. Children who listened to cheerful music tended to point to the smiley faces while the others pointed to the unhappy ones. The researchers found that sad kids took at least a second less to find the small shapes. They also found an average of three or four more shapes.
In the second experiment, 61 children watched one of two scenes from a film. One scene was happy, and the other was sad. Just like in the first experiment, kids who saw the sad scene acted better compared to the others.
The researchers guessed that feeling down makes people more likely to focus on a problem or difficult situation. Not all scientists agree with them, however. Other studies argued that maybe, that cheerful music in the first experiment distracted (使分心) kids from finding shapes.
While scientists work on finding out the answers, it still might be wise to choose when to do your tasks according to your mood. After eating a delicious ice cream, for example, write an essay.
小题1:Researchers did experiments on kids in order to find out ______.
| A．how they really feel when they are learning |
| B．whether mood affects their learning ability |
| C．what methods are easy for kids to learn |
| D．the relationship between sadness and happiness |
| A．kids who listened to happy music turned out to be energetic |
| B．kids who listened to sad music liked to choose smiley faces |
| C．kids worked harder in the background of happy music |
| D．sad music helped kids find out small shapes quickly |
| A．The researchers will continue to do experiments. |
| B．The researchers have found a clear answer. |
| C．The experiments are popular among kids. |
| D．Kids change their feelings more easily. |
| A．a science survey | B．a research report |
| C．a school project | D．an introduction to an experiment |
Among all the fast growing science and technology, the research of human genes（基因）, or biological engineering as people call it, is drawing more and more attention now. Sometimes it is a hot topic discussed by people.
The greatest thing that gene technology can do is to cure serious diseases that doctors at present can almost do nothing with, such as cancer and heart disease. Every year, millions of people are murdered by these two killers. And to date, doctors have not found an effective way to cure them. But if the gene technology is applied（应用）, not only these two diseases can be cured completely, bringing happiness and more living days to the patients, but also the great amount of money people spend on curing their diseases can be saved, therefore it benefits the economy as well. In addition, human life span(寿命) can be prolonged.
Gene technology can help people to give birth to more healthy and clever children. Some families, with the English imperial family being a good example, have hereditary diseases. This means their children will for sure have the family disease, which is a great trouble for these families. In the past, doctors could do nothing about hereditary diseases. But gene technology can solve this problem perfectly. The scientists just need to find the wrong gene and correct it and a healthy child will be born.
Some people are worrying that the gene research can be used to manufacture (produce) human beings in large quantities. In the past few years, scientists have succeeded in cloning a sheep; therefore these people predict that human babies would soon be cloned. But I believe cloned babies will not come out in large quantities, for most couples in the world can have babies in very normal way. Of course, the governments must take care to control gene technology.
小题1:What does “these two killers” in the second paragraph refer to?
| A．Gene technology and another treatment of the two diseases. |
| B．The two murderers who killed the cloned baby |
| C．The two diseases of cancer and heart disease |
| D．Hereditary diseases and cancer |
| A．How gene technology can be applied to cure family diseases. |
| B．Gene technology can be used to clone human babies. |
| C．Gene technology can help people to give birth to a baby. |
| D．Gene technology can help the English imperial family out |
| A．Expressing the writer’s idea that gene technology will benefit people |
| B．Telling people the advantages of gene technology |
| C．Telling the readers that gene technology will not benefit people |
| D．Explaining that gene technology will also do harm to the humanity |
| A．Scientists have already successfully cloned sheep. |
| B．Most couple will normally give birth to babies. |
| C．A good number of babies will be cloned |
| D．The government will take action to control it. |
Every heard the old saying, “An apple a day keeps the doctor away”? It is true! Apples have a lot of nutritional value!
A medium sized apple has only 80 calories (卡). What a great snack choice! Not only is an apple low in calories, they contain absolutely no fat. Thus, eating apples as snacks, as opposed to chips or cakes, will help reduce the risk of cancer.
On top of reducing the risk of cancer, the low sodium (钠) amounts in apples also help reduce high blood pressure and heart disease. They are cholesterol (胆固醇) free. They are also rich in vitamin A, which helps strengthen vision (视力) along with bone and tooth development.
Now that we know the nutritional facts, let’s take a look at some of the fun facts—That’s right! Apples can be fun, as well as healthy!
If an apple is fresh, it will float on water. Twenty-five percent of an apple is air, thus allowing it to float. Can you imagine bobbing (上下浮动) for apples that sink?
And, did you know that an apple is covered with a natural layer of wax (蜡)? That’s what the peeling (剥下的皮) is. It protects the apple’s high water content, keeping the apple fresh.
Apples are a very important part of a healthy diet, but keep in mind they can be fun. And always remember, if an apple sinks in water, pick another one to bob for!
小题1:How many kinds of facts about apples are mentioned in the passage?
| A．Two. | B．Three. | C．Four. | D．Five. |
| A．calories and sodium | B．fat and sodium |
| C．fat and cholesterol | D．cholesterol and sodium |
| A．too high in water content | B．still green |
| C．sweet and rich in vitamins | D．unsuitable to eat |
| A．Because they contain much water. |
| B．Because they have peeling with a layer of wax. |
| C．Because they contain much air. |
| D．Because they have peeling with nutritional value. |
Three more cattle farms in Andong，North Gyeongsang Province，were found to have been infected with the deadly foot-and-mouth disease，Nov．2 2010，Thursday．People fear that livestock farms in other parts of the country could be hit by the virus soon．
On Monday，the disease was first detected on two pig farms in Andong，about half a year after the last disease broke out in Korea．A cattle farm in the area also fell victim to the animal disease the following day．
The Ministry for Food，Agriculture，Forestry and Fisheries made sure that three more cases of foot-and-mouth disease appeared on Thursday and decided to kill all the animals at the farms and others at nearby places to stop the spread of the virus to other regions．Over 800 cows and pigs within a 500 meter range of the infected farms were killed and buried underground．
“Three suspected cases were reported Wednesday，near the pig farms where the first outbreak was reported．The laboratory tests today showed that all three cattle farms were infected with the disease,” a ministry official said．Two newly infected cattle farms were less than 4 kilometers away from the two pig farms，while the third one was only 2．5 kilometers away．
The ministry also said another cattle farm in Andong reported suspected cases of foot-and-mouth disease on its livestock Thursday，indicating the disease will likely continue to spread across the city and possibly beyond．
The government has culled more than 33,000 animals near the affected farms Monday alone under its disease prevention program．Additionally，all 84 livestock markets across the nation were closed Wednesday for a period to prevent spread of the disease．
No suspected cases have been reported outside of Andong，but the government Thursday decided to destroy an additional 22,000 pigs at two farms in Boryeong，South Chungcheong Province．
小题1:Last time foot and mouth disease ．
| A．broke out in North cattle farms |
| B．was controlled as soon as possible |
| C．happened in June，2010 |
| D．destroyed almost all cattle in cattle farms |
| A．The government controlled only the two farms． |
| B．The government had more animals killed． |
| C．The government tried to cure the sick animals． |
| D．The government hated to kill animals． |
| A．treated | B．killed | C．bought | D．sold |
| A．22,000 pigs have been infected with the disease |
| B．22,000 pigs will be moved to other farms |
| C．Boryeong is also an infected area |
| D．22,000 pigs will go down to their death |
| A．Today’s News | B．History and Culture |
| C．Entertainment | D．Science |
Secondhand smoke isn’t just a health threat to people．It can also hurt dogs and cats，veterinarians say．
According to the Centers for Disease Control and Prevention，more than 126 million Americans who don"t smoke are exposed to secondhand smoke in their homes，vehicles，workplaces，and public places．This exposure causes thousands of lung cancer and heart disease deaths among nonsmokers every year，according to the California Environmental Protection Agency．
“Making the leap from the effects of secondhand smoke on humans to their effects on pets isn"t a big one,” says veterinarian （兽医专家） Carolynn MacAllister of Oklahoma State University．
“There have been a number of scientific papers recently that have reported the significant health threat secondhand smoke poses to pets,” MacAllister said．“Secondhand smoke has been associated with oral cancer and lymphoma in cats，lung and nasal cancer in dogs，as well as lung cancer in birds.”
Studies have also shown that dogs living in a smoking household are susceptible to cancers of the nose and sinus area，particularly if they are a long-nosed breed，because their noses have a greater surface area that is exposed to carcinogens and a greater area for them to accumulate．Dogs affected with nasal cancer normally don"t survive for more than one year．
“Short and medium-nosed dogs are more susceptible to lung cancer，because their shorter nasal passage aren"t as effective at accumulating the inhaled secondhand smoke carcinogens,” MacAllister said．“This results in more carcinogens （致癌物质） reaching the lungs.”
Birds are also at risk for lung cancer，as well as pneumonia，because their respiratory systems are hypersensitive to any type of air pollutant．
To help prevent animals from being adversely affected by smoking，pet owners who smoke should have a designated smoking area that is separated from the home or stop smoking altogether，MacAllister said．
小题1:From the passage，we can see secondhand smoke maybe not harmful to _______．
| A．smokers | B．non-smokers | C．pets | D．trees |
| A．Smokers can smoke anywhere. |
| B．Smokers can smoke at any time. |
| C．Smokers should smoke in the designated place. |
| D．Smokers must give up smoking at once. |
| A．Long-nosed dogs | B．Short-nosed dogs |
| C．Medium-nosed dogs | D．Dogs without noses |
| A．Secondhand Smoke Causes Cancer in People |
| B．Secondhand Smoke Causes Cancer in Birds |
| C．Secondhand Smoke Causes Cancer in Pets |
| D．Secondhand Smoke Causes Cancer in Cats |
| A．are likely to be harmed by |
| B．are hard to be influenced by |
| C．are less to be effected by |
| D．are lucky to be caught by |
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