In most situations, light helps us see. But when it comes to looking at the night sky, light is actually a kind of pollution. It prevents our view of some of life’s most striking sights: stars, planets, and even galaxies.
“When I was a little boy, I loved the night sky. I remember looking up and the sky was filled with stars. I became an astronomer because I was amazed by their beauty,” says Robert gent, “Now in most big cities kids can’t see the stars like I did.”
Normally, about 2,500 individual stars are visible to the naked eye without using any special equipment. But because of light pollution, you actually see just 200 to 300 and fewer than a dozen from some cities. Only one in three Americans can see our own galaxy (星系) with the naked eye. Those people live far away from the lights of big cities, office building, and shopping malls.
Fortunately, there’s an inexpensive and useful way. If we shine lights down at the ground instead of up into the sky, and use lower brightness levels, we can save big amounts of energy and keep the beauty of the night skies. Many cities and towns have passed laws limiting lights at night, making sure enough shine for safety without creating much light pollution.
Light pollution affects more than our view of the heavens and can harm wildlife. Migrating (迁移) birds sometimes fly over cities and become confused by the brightness, flying in circles until they drop from exhaustion. Sea turtles need dark beaches for nesting and won’t approach bright lights. Too much light at night may even affect human health. For all these reasons, researchers are working on ways to use light only when and where they are truly needed. Everyone deserves to look up at the sky.According to the text, using our naked eyes, ______________.
| A．people in remote areas can see more stars than those in big cities |
| B．over one third Americans can see our own galaxy |
| C．about one in three Americans in big cities can see our own galaxy |
| D．Americans can only see 200 to 300 stars |
Many cities and towns have passed laws limiting lights at night mainly to _________.
| A．save the electricity | B．make sure of cities’ safety |
| C．let you count the number of stars | D．avoid much light pollution |
In how many ways will the light pollution do harm?
| A．One | B．Two | C．Three | D．Four |
The underlined word “exhaustion” in the last paragraph means “_________”.
| A．air pollution | B．tiredness | C．breath | D．brightness |
Is there something that you’ve always wanted to try but just never had the time？Well, make plans to try it now since you are on summer vacation. Not all vacations call for taking a tour bus to take photos of famous landmarks. Some vacations allow you plenty of opportunities to learn.
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. In that case, you can really learn the authentic foreign language.
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 your 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 practice 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!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. |
The advantages of learning a language in its native country is that ________.
| A．the environment is fit for you to use the language. |
| B．you are able to learn the real foreign language. |
| C．native speakers offer you a lot of chances to practice. |
| D．you can learn the language and experience its culture. |
The purpose of writing the text is to________.
| A．advertise some popular summer programs. |
| B．encourage readers to have a good time relaxing. |
| C．offer some tips on how to enjoy a learning vacation. |
| D．attract more readers to spend summer time learning. |
For some people, music is no fun at all. About four percent of the population is what scientists call “amusic.” People who are amusic are born without the ability to recognize or reproduce musical notes (音调). Amusic people often cannot tell the difference between two songs. Amusics can only hear the difference between two notes if they are very far apart on the musical scale.
As a result, songs sound like noise to an amusic. Many amusics compare the sound of music to pieces of metal hitting each other. Life can be hard for amusics. Their inability to enjoy music set them apart from others. It can be difficult for other people to identify with their condition. In fact, most people cannot begin to grasp what it feels like to be amusic. Just going to a restaurant or a shopping mall can be uncomfortable or even painful. That is why many amusics intentionally stay away from places where there is music. However, this can result in withdrawal and social isolation. “I used to hate parties,” says Margaret, a seventy-year-old woman who only recently discovered that she was amusic. By studying people like Margaret, scientists are finally learning how to identify this unusual condition.
Scientists say that the brains of amusics are different from the brains of people who can appreciate music. The difference is complex, and it doesn’t involve defective hearing. Amusics can understand other nonmusical sounds well. They also have no problems understanding ordinary speech. Scientists compare amusics to people who just can’t see certain colors.
Many amusics are happy when their condition is finally diagnosed (诊断). For years, Margaret felt embarrassed about her problem with music. Now she knows that she is not alone. There is a name for her condition. That makes it easier for her to explain. “When people invite me to a concert, I just say, ‘No thanks, I’m amusic,’” says Margaret. “I just wish I had learned to say that when I was seventeen and not seventy.”Which of the following is true of amusics?
| A．Listening to music is far from enjoyable for them. |
| B．They love places where they are likely to hear music. |
| C．They can easily tell two different songs apart. |
| D．Their situation is well understood by musicians. |
According to paragraph 3, a person with “defective hearing” is probably one who __________.
| A．dislikes listening to speeches |
| B．can hear anything nonmusical |
| C．has a hearing problem |
| D．lacks a complex hearing system |
In the last paragraph, Margaret expressed her wish that __________.
| A．her problem with music had been diagnosed earlier |
| B．she were seventeen years old rather than seventy |
| C．her problem could be easily explained |
| D．she were able to meet other amusics |
What is the passage mainly concerned with?
| A．Amusics’ strange behaviours. |
| B．Some people’s inability to enjoy music. |
| C．Musical talent and brain structure. |
| D．Identification and treatment of amusics. |
Some years ago industries had more freedom than they have now, and they did not need to be as careful as they must today. They did not need to worry a lot about the safety of the new products that they developed. They did not have to pay much attention to the health and safety of the people who worked for them. Often new products were dangerous for the people who used them; often conditions in the work place had very bad effects on the health of the workers.
Of course sometimes there were real disasters which attracted the attention of governments and which showed the need for changes. Also scientists who were doing research into the health of workers sometimes produced information that governments could not ignore. At such times, there were inquiries into the causes of the disasters or the problems. New safety rules were often introduced as a result of these inquiries; however, the new rules came too late to protect the people who died or who became seriously ill.
Today many governments have special departments that protect customers and workers. In the U.S., for example, there is a department that tests new airplanes and gives warnings about possible problems. It also makes the rules that aircraft producers must follow. Another department controls the foods and drugs that companies sell. A third department looks at the places where people work, and then reports any companies that are breaking the laws which protect the health and safety of workers. Of course, new government departments and new laws cannot prevent every accident or illness, but they are having some good results. Our work places are safer and cleaner than before. The planes and cars that we use for travel are better. Producers are thinking more about the safety and health of the people who buy and use their products.What is the passage mainly about?
| A．Conditions in the work place. |
| B．The freedom of industries in the past. |
| C．Changes in industrial production. |
| D．The safety and health of workers and customers. |
According to the passage, we can get the conclusion that in the past __________.
| A．workers often got ill because of the poor working conditions |
| B．companies were free to put out any products they wanted to |
| C．many people were killed by dangerous products |
| D．industries were as careful in management as they are today |
It is implied in the passage that ____________.
| A．governments and companies had different opinions about the safety of products |
| B．governments paid little attention to the safety of products. |
| C．government officials often did not listen to scientists |
| D．in the past no safety laws were introduced by governments |
The special departments protect customers and workers in many ways EXCEPT by ____.
| A．testing new products |
| B．designing new products |
| C．controlling the sale of products |
| D．inspecting work places |
Homestay provides English language students with the opportunity to speak English outside the classroom and the experience of being part of a British home.
What to Expect
The host will provide accommodation and meals. Rooms will be cleaned and bedcovers changed at least once a week. You will be given the house key and the host is there to offer help and advice as well as to take an interest in your physical and mental health.
Accommodation Zones
Homestays are located in London mainly in Zones 2, 3 and 4 of the transport system. Most hosts do not live in the town centre as much of central London is commercial and not residential. Zones 3 and 4 often offer larger accommodation in a less crowded area. It is very convenient to travel in London by underground.
Meal Plans Available
♢Continental Breakfast
♢Breakfast and Dinner
♢Breakfast, Packed Lunch and Dinner
It’s important to note that few English families still provide a traditional cooked breakfast. Your accommodation includes Continental Breakfast which normally consists of fruit juice, cereal (谷物类食品), bread and tea or coffee. Cheese, fruit and cold meat are not normally part of a Continental Breakfast in England. Dinners usually consist of meat or fish with vegetables followed by desert, fruit and coffee.
Friends
If you wish to invite a friend over to visit, you must first ask your host’s permission. You have no right to entertain friends in a family home as some families feel it is an invasion of their privacy.
Self-Catering Accommodation in Private Homes
Accommodation on a room-only basis includes shared kitchen and bathroom facilities and often a main living room. This kind of accommodation offers an independent lifestyle and is more suitable for the long-stay student. However, it does not provide the same family atmosphere as an ordinary homestay and may not benefit those who need to practice English at home quite as much.The passage is probably written for ______.
| A．hosts willing to receive foreign students |
| B．foreigners hoping to know British culture |
| C．travelers planning to visit families in London |
| D．English learners applying to live in English homes |
Which of the following will the host provide?
| A．Room cleaning. | B．Medical care. |
| C．Free transport. | D．Physical training. |
According to the passage, what does Continental Breakfast include?
| A．Dessert and coffee. | B．Fruit and vegetables. |
| C．Bread and fruit juice. | D．Cereal and cold meat. |
Why do some people choose self-catering accommodation?
| A．To experience a warmer family atmosphere. |
| B．To enrich their knowledge of English. |
| C．To entertain friends as they like. |
| D．To enjoy much more freedom. |
Surface Exploration. Robots make great explorers on planets，moons，and other landing areas. Aside from earth，just about every surface in the solar system is unsafe for humans to explore. The air on most other planets is insufficient(不足的) for humans to breathe，making it necessary to wear a space suit and oxygen equipment. The temperatures on these surfaces are much too hot or much too cold for any humans to withstand（禁得起）．Plus there would be complications with radiation，weather，and a lack of gravity. Robots have much less limitation in these areas and can survive much longer under these conditions.
Data Collection. Robots are designed for collecting scientific data. Robots are also able to perform many tasks at a time and can process information much quicker and more efficiently. Important scientific projects from detecting minerals，analyzing ground samples，and finding water are all performed much quicker and more accurately (精确地) by robots.
Cost Effective. The use of robots has made the cost of space exploration much less expensive than it would cost for humans to do the work. In order to successfully send humans into space we would need to build a vehicle that can not only carry humans，but also enough food and water to keep them alive for the duration of the trip. Moreover，robots have no problems working for hours on end. Robots never complain，they don't require food or water，and they never need a bathroom break.
Space Travel. Over the past 30 years or so there have been many different types of robots used successfully in the exploration of space. Perhaps the most famous and successful robots are the Spirit and Opportunity who have both been exploring the surface of Mars. They have both been very successful with experiments on soil and rocks and have even found evidence of water in Mars' history.According to the passage，which of the following is NOT true?
| A．The use of robots in space exploration costs more than the use of humans. |
| B．It may be dangerous for humans to explore the solar system except the earth. |
| C．Both the Spirit and Opportunity have found the evidence of water in the Mars. |
| D．Many different types of robots have explored the space successfully. |
Which column could the passage come from?
| A．Education. | B．Finance. |
| C．Travel. | D．Science. |
The underlined word “withstand” most probably means“________”．
| A．arise | B．bear | C．defeat | D．diverse |
What is the writer's attitude in this passage?
| A．Negative. | B．Persuasive. |
| C．Subjective. | D．Objective. |
While sending an astronaut into the space，we should consider the following EXCEPT ________．
| A．the radiation | B．the oxygen | C．the diet | D．the alien |