Want to travel as cheaply as possible while enjoying the great scenery as much as you like?
Backpacking is the way. As the most popular traveling choice among young western people, backpacking allows you to travel at your own free will. Carrying a tent, sleeping bag and clothes, backpackers also need to pack an attitude that will help them deal with many mental and physical challenges.
It is a thrill to put our ability to test and challenge ourselves with sorts of difficulties we might come across. So, backpacking is something young people can hardly deny.
Young people in Europe often travel around by train. Now, with plane tickets dropping in price, more are traveling to distant countries, such as Australia and China. And some just travel within their own countries.
But no matter where a backpacker travels, planning in advance is important if he or she wants to enjoy the trip.
Clothing
In summer, light, waterproof clothes are best. Backpackers must remember to travel lightly and not pack too many clothes.
Medicine
There are many medicines, especially for summer, such as those for sunstroke, snake bites and mosquitoes. Others are useful in every season, such as those for common colds, poisoning and diarrhea.
Cards
Three types of cards are of great value for backpacks: student Identity Card, personal ID and a credit card.
A student ID card can be helpful for saving money. It often gets train tickets and entrance tickets for cheaper prices in many Western countries.
Personal ID card can, not only get you out of trouble with local police, but also prove useful in all sorts of other situations.
Carrying a credit card can be a safe way of carrying money, as cash can easily get lost, stolen or wet.
And of course, don’t forget to enjoy your trip!
【小题1】What does the underlined sentence mean?
| A．Backpackers also need to be in high spirits when they want to travel. |
| B．Backpackers may also face dangerous situations. |
| C．Backpackers also need to talk with doctors about their traveling. |
| D．Backpackers need to make preparation for many kinds of difficulty in advance. |
| A．Easy to wash. | B．Not letting water go through. | C．Washed without water. | D．Used in water. |
| A．your student ID | B．your credit card | C．your personal ID | D．your passport |
| A．They can travel very easily. |
| B．They won’t worry about where to live. |
| C．They can have the chance to take some adventures. |
| D．They can take some physical exercise. |
| A．To give some ideas about traveling. |
| B．To encourage the young to travel. |
| C．To tell people how to avoid something unpleasant. |
| D．To offer some useful advice for traveling. |
【小题1】D
【小题2】B
【小题3】C
【小题4】C
【小题5】D
解析试题分析： 想要一场既便宜又精彩的旅行吗?那么背包旅行就是你的首选。不需要太多准备和花销，带好你必需的物品和帐篷，向远方出发吧，你准备好接受身体和精神的双重挑战了吗？
【小题1】细节理解题。背包旅行充满了挑战，因此必须预先做好准备。故选D。
【小题2】细节理解题。夏天轻薄又防水的衣服很是方便，waterproof 是防水的意思。因此是不易透水的意思，故选B
【小题3】细节理解题。由“Personal ID card can, not only get you out of trouble with local police, but also prove useful in all sorts of other situations.”可知被当地警察拦下的话要出示身份证。故选C。
【小题4】细节理解题。由“It is a thrill to put our ability to test and challenge ourselves with sorts of difficulties we might come across.”可知有机会去冒险，这是背包旅行的好处。故选C。
【小题5】主旨大意题。本文主要介绍了背包旅行的好处和怎样准备的事。故选D。
考点：科普类阅读。
同步练习强化拓展系列答案科目：高中英语 来源： 题型：阅读理解
The sound of a mosquito can mean trouble in many parts of the world. The bite of the mosquito can be deadly. The insects carry serious diseases like malaria. It is estimated that almost 630,000 people died from malaria and malaria-related causes in 2012, and most of these cases were in African countries.
In the United States, a group of California scientists is working to develop a more effective and less costly substance(物质)to protect people from mosquitoes. The researchers are investigating the sense of smell in mosquitoes. They found the insects use the same receptor(感受器)for identifying carbon dioxide in human breath as they do for the smell of our skin. Anandasankar Ray, who is leading the investigation, says scientists tested more than a million chemical compounds(化合物)until they found a substance called Ethyl pyruvate. He says Ethyl pyruvate makes the mosquitoes' receptor inactive. ”When we apply Ethyl pyruvate to a human arm and offer it to hungry mosquitoes in a cage, very few of the mosquitoes are attracted to the human arm because only a few of them are able to smell it out,” said Ray.
Genevieve Tauxe, a member of the research team, says it was not easy to find the neurons (神经元)of nose cells that recognise both the smell of human breath and skin. "With the device used to examine mosquitoes, we are able to insert a very small electrode(电极)into the part of the mosquitoes' nose, where its smelling neurons are and where the smell is happening," said Tauxe.
Anandasankar Ray says a product based on Ethyl pyruvate may cost less to produce than DEFT，the most effective chemical treatment now in use. He says DEFT is too costly for most people who live in areas affected by malaria.
“Perhaps by finding smells that can attack other target receptors, we will be able to improve upon DEFT and finally have the next generation of insect behavior control products," said Ray.
【小题1】The best title for the passage is most probably _______________________________.
| A．Scientists Find New Substance to Fight Mosquitoes |
| B．A New Generation of DEET Has Been Developed to Kill Mosquitoes |
| C．Malaria一a Serious Disease Causing 630,000 Deaths |
| D．Ethyl Pyruvate一an Insect Behavior Control Product |
| A．kill the mosquitoes' smelling neurons |
| B．cause the mosquitoes to lose their sense of smell |
| C．result in the inactiveness of the mosquitoes' receptor |
| D．make the mosquitoes uninterested in human breath and skin smell |
| A．inform readers of the new development in fighting mosquitoes |
| B．praise the achievements made in the battle against malaria |
| C．introduce a cheaper product in fighting mosquitoes |
| D．tell the differences between Ethyl Pyruvate and DEET |
| A．the column of newspaper ads |
| B．the health column of a magazine |
| C．a textbook of medical schools |
| D．a collection of doctors' essays |
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科目：高中英语 来源： 题型：阅读理解
DAVID Beckham. Cristiano Ronaldo and Rnfacl Nadal while you watch sports and admin* the players’ skills, do you ever notice how handsome the players are?
Yes, sportsmen tend to be handsome. And they haven’t only attracted the interest of the audience even scientists are now studying their good looks.
In a recent study, Erik Postma, a biologist at the University of Zurich in Switzerland, collected the headshots（头像）of 80 professional athletes from I hr 2012 Tour He France, a bicycle race held in Franco. The race, which covers 3,200 kilometers in 23 days, is often considered to In* one of the hardest endurance（耐力）events, according to The Telegraph.
Postma then asked female participants to score the cyclists’ attractiveness.judging them only based on their facial appearances. So, if a participant recognized any of the cyclists, meaning she knew how good he was at the sport, her score wouldn’t count.
After comparing all the scores with the cyclists’ performances in the 2012 race, Postma was surprised to find that the best riders were rated on average 25 percent more attractive than the worst ones. For example, one of the cyclists, Maxime Monfort , came third in terms of attractiveness and sixth in terms of performance, reported Discovery News.
But where did women get the ability to single out a good rider by simply looking at his face?
According lo Postma, evolution (进化) seems to be the answer. In ancient times, women preferred to marry strong men because they would provide good genes for their children. A man with great endurance was also able to cover long distances to hunt for food, which would allow him to better feed the family. “That’s why endurance performance was a key evolutionary factor.” Postma told Discovery News.
As you can see, it’s not that sportsmen ate more attractive themselves, women were just born to think of them that way.
Perhaps surprisingly, when Postma did the same test with male participants, he found that men actually had a quite similar view on which riders were handsome. Even
though most men aren’t aware of it. they inherited (继承) this ability from their ancient past, when it was necessary to “spot potential competitors” , explained Postma.
【小题1】What did Erik Postma ask female participants to do in his study?
| A．To help collect the headshots of professional cyclists from the Tour de France. |
| B．To pick out the cyclists whom they are familiar with or appreciate most. |
| C．To rate the cyclists’ attractiveness according to facial appearance. |
| D．To predict the cyclists ’ performances based on facial appearance. |
| A．The more attractive a cyclist was, the better he performed in the race. |
| B．Generally, a cyclist’s endurance had nothing to do with his attractiveness. |
| C．Attractive cyclists proved to have less endurance than those who were less attractive. |
| D．Those who performed best in the games were considered more attractive than those who performed worst. |
| A．Women and men hold quite different views on male attractiveness. |
| B．Men with good looks tend to lie less popular than men with great endurance. |
| C．A man with great endurance appealed to women in ancient times and this remains the same today. |
| D．Most men don* t have the same ability as women to single out a good sportsman by simply looking at his face. |
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科目：高中英语 来源： 题型：阅读理解
Running like the wind, roaring (咆哮) like thunder, tigers have long been feared and respected as a king of the animal world. But last week a report said that there are no more than 30 wild tigers left in south China.
This was the conclusion of a team of scientists from China's State Forestry Administration and the World Nature Fund.
The South China tiger, also known as the Chinese tiger, is native to southern China. In the 1950's, there were over 4000 tigers found in mountain forests in the country. But due to the destruction of their natural habitat and uncontrolled hunting, it has been pushed on to the list of the world's top ten most endangered species.
Sixtysix of the big cats can be found in the cages of a dozen zoos around China. But they are nothing like their wild cousins. They have lost their natural skills such as hunting and killing. If they were set free they could not look after themselves.
“Breeding has damaged the quality of the species”, said Pei Enle, deputy director of the Shanghai Zoo.
To reintroduce the species into the wild, the country started a programme to send five to ten young tigers to South Africa. Four of them have already arrived. Progress has been made as two elder tigers have recovered some of their instincts(本能) and can hunt wild animals by themselves at the African base.
“South Africans are very experienced in reintroducing big animals to the wild. The country has very good natural conditions for the tigers to learn in”, said Lu Jun, office director of the National Wildlife Research and Development Center.“We tried in Fujian Province, but it was not successful as there was not a complete ecochain(生物链) and there was a lack of space.”
The tigers should return to China in 2007 when the reservations in Fujian are ready.
【小题1】What is the main reason for the South China tiger becoming one of the world's top ten most endangered species?
| A．Because it has lost its natural instincts. |
| B．Because there is not a complete ecochain. |
| C．Because there is no space for it. |
| D．Because uncontrolled hunting has destroyed its natural living conditions. |
| A．Its effect still remains to be seen. |
| B．Two tigers can already compete with their wild cousins. |
| C．Some of the tigers are already on the road to recovering their natural skills. |
| D．The tigers should be able to recover their instincts completely by 2007. |
| A．they are no longer feared by other wild animals |
| B．they don't know how to hunt or kill |
| C．a complete change has resulted in the species because of breeding |
| D．to reintroduce them into the wild has become an urgent task |
| A．To help the tigers recover their ability to live in the wild. |
| B．To provide them with a better environment. |
| C．To get the tigers to go on a tour. |
| D．To find a complete ecochain for them. |
| A．Because the tigers can hunt wild animals by themselves at the African base. |
| B．Because South Africans are skilled at dealing with the tigers. |
| C．Because there is a complete ecochain and enough space there. |
| D．Because the country has good natural conditions for the tigers to learn in. |
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科目：高中英语 来源： 题型：阅读理解
A recent study, published in last week’s Journal of the American Medical Association, offers a picture of how risky(冒险的) it is to get a lift from a teenage driver. Indeed, a 16-year-old driver with three or more passengers is three times as likely to have a deadly accident as a teenager driving alone, while the risk of death for drivers between 30 and 59 decreases with each additional passenger.
The authors also found that the death rates for teenage drivers increased sharply after 10 p.m., and especially after midnight. With passengers in the car, the driver was even more likely to die in a late-night accident.
Robert Foss, a scientist at the University of North Carolina Highway Safety Research Center, says the higher death rates for teenage drivers have less to do with “really stupid behavior” than with just a lack of driving experience. “The basic issue,” he says, “is that adults who are responsible for issuing licenses fail to recognize how complex and skilled a task driving is.”
Both he and the author of the study believe that the way to mitigate (使……缓解)the problem is to have states set up so-called graduated licensing systems, in which getting a license is a multistage process. A graduated license requires that a teenager first prove himself capable of driving in the presence of an adult, followed by a period of driving with night or passenger limits, before graduating to full driving licenses.
Graduated licensing systems have reduced teenage driver crashes, according to recent studies. About half of the states now have some sort of graduated licensing system in place, but only 10 of those states have limits on passengers. California is the strictest, with a new driver under 20 forbidden to carry any passenger (without the presence of an adult over 25) for the first six months.
【小题1】Which of the following situations can we infer is most dangerous according to the passage?
| A．A teenager driving after midnight with passengers in the car. |
| B．Adults giving a lift to teenagers on the highway after 10 p.m. |
| C．Adults driving with three or more teenage passengers late at night. |
| D．A teenager getting a lift from a stranger on the highway at midnight. |
| A．their frequent driving at night |
| B．their improper ways of driving |
| C．their driving with passengers |
| D．their lack of driving experience |
| A．The licensing departments are partly responsible for teenagers' driving accidents. |
| B．Driving is too complex a skill for teenagers to learn. |
| C．Teenagers should be forbidden to apply to take driving lessons. |
| D．Teenagers should spend more time learning to drive. |
| A．driving in the presence of an adult should be made a rule |
| B．the licensing system should be improved |
| C．they should not be allowed to drive after 10 p.m. |
| D．they should be forbidden to take on passengers |
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科目：高中英语 来源： 题型：阅读理解
Butterflies are some of the most fascinating and beautiful insects in the world. Adult butterflies will live about 2 to 4 weeks. They use their senses of sight, touch, hearing, smell, and taste to survive in the world, find food and mates, lay eggs in an appropriate place, migrate, and avoid hungry enemies.
Butterflies have large compound eyes, which allow them to see in all directions without turning their heads. Like most insects, butterflies are very nearsighted, so they are more attracted to a sea of flowers than individual plants. Butterflies do not “see” colors such as red, green, and yellow, but they can sense sunlight, which indicates the direction the sun is shining, as well as ultraviolet light, which is present on many flowers and guides butterflies to honey sources.
Butterflies have a very well-developed sense of smell, but it is not in their nose, since they don't have one. Sense receptors are located in their antennae, feet, and many other parts of the body. They can help butterflies find their favorite flower honey food, and mates.
Butterflies' feet have sense organs that can taste the sugar in flower honey, letting the butterflies know if something is good to eat or not. Some females also carefully choose host plants by tasting to find appropriate places to lay their eggs. Adult butterflies feed their babies using a long tube. Butterflies force blood into the tube to straighten it out, allowing them to feed. Butterflies get all their food from this tube.
Butterflies don't have ears. Instead they “hear” sounds through their wings by sensing changes in sound vibrations.
Butterflies may possess senses we don't even know about yet, because their body structure is very different from ours, and therefore difficult to understand, when observed through our own human senses.
【小题1】The text mainly focuses on ________.
| A．butterflies' living habits | B．butterflies' beauty |
| C．butterflies' senses | D．butterflies' daily activities |
| A．Butterflies can see in all directions and don't need to turn heads. |
| B．Butterflies have good eyesight. |
| C．Butterflies are sensitive to bright colors including red and yellow. |
| D．Butterflies cannot sense the ultraviolet light. |
| A．To find highqualified honey. |
| B．To have a good place for living. |
| C．To make it easier for them to hide from the enemies. |
| D．To find a proper place for their eggs. |
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科目：高中英语 来源： 题型：阅读理解
The earth is the only planet that scientists think has life. Why does the earth have life while the other planets (行星) don't? For one thing, the earth is just the right temperature. As the_third_planet from the sun, the earth seems to be just the right distance away. The planets which are closer to the sun are hot that their surfaces bake (烘烤) in the sun. The farthest planets are cold balls.
When the earth developed — which scientists believe may have happened about 4 billion years ago — many gases covered the earth. The gases caused the earth to be hot. But something wonderful happened. The temperature was just right for thick clouds to form. It rained very hard for a very long time. This gave the earth its oceans. Water made it possible for plants to grow. The plants created oxygen in the atmosphere. Oxygen is the gas that humans and animals breathe.
Only one other planet in the solar system seems to be something like the earth. That planet is Mars (火星). Mars is smaller than the earth, and it is quite a bit cooler. But it is not too cold for humans. On some days, the temperatures are as low as a winter day in the northern United States. If you wore a special space suit, you could walk around on Mars. You would have to bring your own air to breathe, the air on Mars is too thin to breathe.
Mars has the largest volcano (火山) in the solar system. It is sixteen miles high. The highest volcano on the earth is five miles high. The most unexpected (未预测到的) sight on Mars is dried up river beds. Scientists believe that Mars was once much better than it is now. Does this mean there could have been living things on Mars? Scientists are not sure, but there has been no sign so far.
【小题1】Which of the following is NOT the reason that the earth has life?
| A．The earth is just the right temperature. |
| B．The volcanos on earth are lower than those on Mars. |
| C．There is oxygen in the atmosphere of the earth. |
| D．The earth seems to be just the right distance away from the sun. |
| A．the Sun | B．the Moon |
| C．the Earth | D．the Mars |
| A．There could have been living things on Mars. |
| B．Mars has the largest volcano in the solar system. |
| C．There is almost no oxygen in the air on Mars. |
| D．Mars is smaller than the earth, and it is quite a bit cooler. |
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科目：高中英语 来源： 题型：阅读理解
Can dogs and cats get along well in the same home? People who are thinking about getting a dog as a friend for their cat are worried that they will fight. A recent research has found that if the cat is taken back home before the dog, and if they are introduced when still young (less than 6 months for cats, a year for dogs), it is highly probable that the two pets will get along swimmingly. In two-thirds of the homes cats and dogs have a good relationship.
However, it wasn’t all sweetness and light. There was a reported coldness between the cat and dog in 25% of the homes, while aggression(侵略，好斗) and fighting were found in 10% of the homes. One reason for this is probably that some of their body languages are just different. For example, when a cat turns its head away it means aggression, while a dog doing the same means submission(顺从).
In homes with cats and dogs living peacefully, researchers found a surprising behavior. They are learning how to talk each other’s language. It is a surprise that cats can learn how to talk “Dog”, and dogs can learn how to talk “Cat”.
What’s interesting is that both cats and dogs have appeared to become smarter. They can learn to read each other’s body languages, suggesting that the two may have more in common than was expected. Once familiar with each other’s body language, cats and dogs can play together, and enjoy sleeping together on the sofa.
The importance of this research on cats and dogs may go beyond pets — to people who don’t get along well, including neighbors, colleagues at work, and even countries. If cats and dogs can learn to get along, surely people have a good chance.
【小题1】Some cats and dogs may fight when ________.
| A．they are cold to each other |
| B．they look away from each other |
| C．they misunderstand each other’s body languages |
| D．they are introduced at an early age |
| A．They eat and sleep together. |
| B．They watch each other’s behaviors. |
| C．They learn to speak each other’s language. |
| D．They know something from each other’s voices. |
| A．have common interests |
| B．are less different than was thought |
| C．have a common body language |
| D．are not so smart as was expected |
| A．We should learn to get along well with others. |
| B．We should know more about animals. |
| C．We should live in peace with animals. |
| D．We should learn more body languages. |
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科目：高中英语 来源： 题型：阅读理解
Plastic is one of the most important technological discoveries of the 20th century.However，it may soon be replaced.The new development—liquid wood—can replace plastics in all branches of modern industries.
Plastic as a material enjoys the biggest demand in the modern world，but it does have a number of drawbacks.First and foremost，plastic isn’t recyclable.Secondly，it contains toxins (毒物) helping develop cancerous diseases.Finally，it’s made of oil and oil reserves aren’t endless.
The liquid wood technology is likely to replace plastic and provide mankind with new materials for many years ahead.Norbert Eisenfreich，a senior researcher at the Faunhofer Institute for Chemical Technology (ICT) in Germany，said that arboform，the new material，is made of lignin (木质素)，which can be obtained from soft tissues of wood.Once mixed with several other materials，it turns into solid and nontoxic alternative for plastics.
ICT team leader Emilia Regina InoneKauffmann said the woodworking industry separates wood into three basic components，including lignin.Lignin isn’t used for the production of paper.Specialists of ICT mixed lignin with several natural materials and thus invented the material which could be melted and molded (铸型)．
When solid，arboform looks like plastic and possesses the qualities of polished wood.It can be used for the production of any items.Arboform is already used for the production of car parts which require extra strength.In addition，liquid wood can be recycled repeatedly.The material preserved all of its qualities even if it’s reprocessed ten times.
However，the new invention doesn’t enjoy an extensive use due to the high content of sulphur (硫) in it.German researchers are sure to reduce the amount of sulphur by 90 percent very soon to make arboform usable for home needs.
【小题1】According to the passage，plastic________.
| A．plays a big role in the modern world |
| B．helps to protect our environment in some way |
| C．has been replaced by the newly discovered material |
| D．helps us to reduce the use of petrol |
| A．It is easily made from natural oil. |
| B．It is more widely used in household. |
| C．It is recyclable and friendly to the environment. |
| D．It contains no poisonous materials. |
| A．the material’s extensive use |
| B．the content of sulphur in arboform |
| C．the production cost of arboform |
| D．the qualities of liquid wood |
| A．advertise the new material—arboform |
| B．introduce liquid wood which will replace plastic |
| C．advertise new products made of arboform |
| D．show readers how to produce arboform |
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