题目
题型：不详难度：来源：
Scientists were able to measure the amazing jaw speed using highspeed video techniques. Sheila Patek, a biologist, says the key is that the jaws have a springy (有弹性的) system, which is critical in getting explosive (爆发性的) speeds.
Consider a bow and arrow. If you try to throw an arrow with your arm, it won"t go very far. If you use a bow, elastic energy stored in the bow is released almost instantly when you release the arrow with your finger or a latch. The combination of the springy bow and latch mechanism is what makes the arrow zoom through the air.
Maybe even more amazing than how fast these ants grab food or even enemies is how they use this same energy to move. As the ant closes its jaws, it uses them to push off the ground—all faster than the eye can see without slow motion video. A snap of the jaw can send an ant up to 8.3 centimeters into the air. That"s like someone who is 1.7 meters jumping 13 meters high! Not only can they quickly escape from enemies, but often a group of ants will start jumping all at once. It would be hard for their enemies to grab just one.
People have suspected the ants used their jaws to jump for over a century, but could only prove it with today"s modern video equipment.
小题1:The fast speed of the trapjaw ant"s jaw lies in ________.
| A．its light body |
| B．its springy system |
| C．its living environment |
| D．the length of its jaw |
| A．how an arrow gets so much energy to fly |
| B．why the trapjaw ants have springy system |
| C．why the trapjaw ants jaws move so fast |
| D．how a bow and arrow works |
| A．How high the ants can leap by using their jaws. |
| B．How quickly the trapjaw ants can move on the ground. |
| C．How wonderfully the springy system in the trapjaw ants" jaws works. |
| D．How quickly the trapjaw ants can grab food or enemies. |
| A．they can catch their enemies easily with their jaws |
| B．their jaws make them difficult to recognize |
| C．their jaws help them find food easily |
| D．their jaws help them escape from their enemies |
答案
小题1:B
小题2:C
小题3:A
小题4:D
解析
试题分析：
小题1:B 细节题。根据第二段2,3行the key is that the jaws have a springy (有弹性的) system说明a springy (有弹性的) system才是真正的原因，故B正确。
小题2:C 推理题。在文章第三段Consider a bow and arrow. If you try to throw an arrow with your arm, it won"t go very far. If you use a bow, elastic energy stored in the bow is released almost instantly when you release the arrow with your finger or a latch.作者用弓和箭的例子来说明这种弹性系统的原理，故C正确。
小题3:A 细节题。根据第四段1,2行Maybe even more amazing than how fast these ants grab food or even enemies is how they use this same energy to move.说明A正确。
小题4:D 细节题。根据第四段最后两行often a group of ants will start jumping all at once. It would be hard for their enemies to grab just one.说明这种方法能让它逃脱敌人的虎口。故D正确。
点评：文章介绍了一种有非凡能力的The trapjaw ant。本文的难度在于词汇关，要扫清文章的语言障碍，要提高上下文的猜测词义的能力。
核心考点
试题【Which animal has the fastest snapping jaw (颚)? If you"re guessing a shark or per】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
The most difficult aspect of a learning vacation may be choosing one because the possibilities are endless. If you enjoy cooking, various companies can take you to Italy, France, Spain, Mexico or even Peru. Once there, you can learn to prepare the local cuisine(烹饪). Trips are often planned to fit in with local food festivals or special events.
The term “learning vacation” often brings language to mind. The best way to learn a language is in an environment where it"s spoken. Study Spanish, French or English. Or attempt a more unusual language like Polish, Estonian or Thai. You"ll be able to learn about the country and absorb the culture at the same time.
If you are fond of sports, you can polish your skills or learn new ones. Golf and tennis schools welcome players of all levels. If you want a bigger thrill, you can learn to surf, go climbing or race cars. It"s even possible to learn the art and techniques of bull fighting while on vacation!
You can also discover our inner artist. Many places offer painting classes in different mediums. The scenic locations, of the schools offer plenty of subjects that provide inspiration for practice.
If you prefer capturing the world on film, take a photography vacation. Travel with a small group to photograph beautiful animals or scenery. You can also practise your technique on people or at historical sights.
Once you decide on a vacation, choose a company carefully. Request names of recent customers you can contact, and then ask them for an evaluation. The more you know before you go, the better prepared you"ll be. Then go out and learn something!
小题1:Why is it hard for you to decide on a learning vacation?
| A．Because it is hard for you to make plans. |
| B．Because the possibilities are unlimited. |
| C．Because there are many good foods from abroad. |
| D．Because there"re too many food festivals or events. |
| A．the environment is fit for you to use the language |
| B．you are able to learn the original foreign language |
| C． native speakers offer you a lot of chances to practise |
| D．you can learn the language and experience its culture |
| A．Car racing. | B．Playing tennis. |
| C．Rock climbing. | D．Surfing. |
In the early 17th century, the idea of the “Grand Tour” was born. Rich young English people sailed across the English Channel（英吉利海峡）.They visited the most beautiful and important European cities of the time, including Paris in France, and Rome and Venice（威尼斯）in Italy. Their tours lasted for two to four years, and the tourists stayed a few weeks or months in each city. The “Grand Tour” was an important part of young people’s education—but only for the rich.
In the 18th century, tourism began to change. For example, people in the UK started to visit some towns, such as Bath to” take the waters”. They believed that the water there was good for their health. So large and expensive hotels were built in these towns.
In the 19th century, travel became much more popular and faster. When the first railways were built in the 1820s, it was easier for people to travel between towns, so they started to go for holidays by the sea. And some started to have holidays in the countryside as cities became larger, noisier and dirtier.
Traveling by sea also became faster and safer when the first steamships were built. People began to travel more to far away countries.
The 20th century saw cars become more and more popular among ordinary people. Planes were made larger, so ticket prices dropped and more people used them.
Thus tourism grew. In 1949, Russian journalist Vladimir Raitz started a company called Horizon Holidays. The company organizes everything—plane tickets, hotel rooms, even food—and tourists pay for it all before they leave home. The package tour and modern tourist industry was born.
The first travel agency in China was set up as early as 1949.But tourism did not take off until 1978.In 2002,the industry was worth 500 billion yuan and became an important part of China’s social development.
小题1:In the early times, the travelers ________.
| A．all came from Roman |
| B．were very young and strong |
| C．had lots of money |
| D．traveled by boat |
| A．Education | B．Money | C．Transportation | D．People’s ideas |
| A．in 1949 | B．in Roman times |
| C．in the early 17th century | D．in the 19th century |
| A．a plane rising into the air |
| B．develop very fast |
| C．remove hats and clothes |
| D．bring down the prices |
For Cairos Technologies, mistakes made by referees are the kind of advertising that money cannot buy. The company has developed a tiny chip(芯片) that fits inside a football and determines whether the ball has crossed the goal line, by being able to discover its exact location on the field. The world football organization, FIFA, has shown interest in the technology. It is very possible that the new technology will be used in the 2006 World Cup in Germany.
"We"ve been testing the technology at the main soccer stadium in Nuremberg for some time and more recently in an under-17 FIFA Cup in Peru," said Gunter Rohmer, a director of the company. "The technology has performed well, and we"re pretty optimistic that it will be used at the games in Germany next year."
The chip only weighs 12 grams, and is placed in the center of the football. It sends 2,000 signals a second to a receiver network of 12 antennas(天线), placed around the field. The receivers then send information about the ball"s location to a central computer, and because it works in real time, it can immediately tell the referee whether a goal has been scored. The chip even can tell when the ball crosses the line in mid-air. Oliver Braun, one of the inventors of the chip, says that feedback from German referees was generally positive. Germany sports-wear giant Adidas is also optimistic about using this kind of chip in other ball sports.
FIFA aims to test the technology later this year at another game in Japan before deciding whether or not to introduce it in all 12 stadiums in Germany for next year"s World Cup.
小题1:Carlos Technologies is pleased because ________.
| A．football fans are angry with referees |
| B．their new product can satisfy football fans |
| C．their new product will have a good market |
| D．they can sell a lot of football in the future |
| A．Carios Technologies can"t afford the high price for advertising their product |
| B．Mistakes in production are also a kind of advertisement |
| C．Carios Technologies has already spent a lot of money on advertising their product |
| D．Referees" mistakes will be of great help for the sale of Carlos Technologies" new product |
| A．information given back by a user |
| B．advice given by someone |
| C．supplying food to customers |
| D．food given back by consumers |
“Teens don’t often consider the long-term results that some behavior can cause,” said Terri Price, a researcher. “Peer pressure can be very difficult to handle for many teens because of their fears of not fitting in”. Peer pressure has always been part of teen life, but teens experience it differently than their former generations did in the past. Sources of peer pressure have increased because of the Internet and other electronic communications.
Recognizing peer pressure can be as simple as noticing that you have been asked to do something that you are not comfortable with. “Listen to your instinct （直觉） , which is a sign for whether something is right or wrong. If it feels wrong, then most likely it is. ”says Price.
Teens are in a time of life when they are still discovering who they are. Many teens are influenced by peer pressure because of their insecurities (不安全感). This can make them helpless especially when their self-control is weak or they lack healthy support, causing them to take risky behavior or turn to unhealthy support.
Dealing with peer pressure is a topic of concern for teens. People can say, “Just say no,” but the truth is that the statement is easier said than done.
小题1:The underlined word “it” in Paragraph 2 refers to .
| A．the Internet | B．teen life |
| C．peer pressure | D．the fear of not fitting in |
| A．whether he often surfs the Internet |
| B．whether he can get security |
| C．whether it is subtle or extreme |
| D．whether he feels comfortable with it |
| A．Because they don’t have the feeling of safety. |
| B．Because they are afraid of fitting in or being accepted. |
| C．Because they need support for their health. |
| D．Because they have nobody to turn to when in trouble. |
| A．easy | B．hard | C．a new topic | D．an impossible task |
Peers can have a positive influence on each other．Maybe another student in your science class taught you an easy way to remember the planets in the solar system．Maybe you got others excited about your new favorite book, and now everyone’s reading it．These are examples of how peers positively influence each other．
Sometimes peers influence each other in negative ways．For example, a few kids in school might try to get you to cut class with them; your soccer friend might try to convince you to be mean to another player and never pass him the ball．
It is tough to be the only one who says “no” to peer pressure, but you can do it．Paying attention to your own feelings and beliefs about what is right and wrong can help you know the right thing to do．
You’ve probably had a parent or teacher advising you to “choose your friends wisely．” Peer pressure is a big reason why they say this．If you choose friends who don’t cut class, smoke cigarettes, or lie to their parents, then you probably won’t do these things either, even if other kids do．
If you continue to face peer pressure and you’re finding it difficult to handle, talk to someone you trust．Don’t feel guilty if you’ve made a mistake or two．
小题1:For whom is the passage most probably written?
| A．Students． | B．Parents． | C．Teachers． | D．Doctors． |
| A．explains why friendship is so important |
| B．gives advice on how to deal with peer pressure |
| C．discusses how peers influence us |
| D．shows how to make more good friends |
| A．Spending more time with classmates． |
| B．Taking up more relaxing hobbies． |
| C．Choosing friends with no bad habits． |
| D．Helping others who are in trouble． |
| A．Friendship． | B．Making decisions |
| C．Self-confidence | D．Peer pressure |
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