Electric cars are dirty. In fact, not only are they dirty, they might even be more dirty than their gasoline-powered cousins.
People in California love to talk about “zero-emissions（排放）vehicles”, but people in California seem to be clueless about where electricity comes from. Power plants most all use fire to make it. Apart from the few people who have their roofs covered with solar cells, we get our electricity from generators（发电机）. Generators are fueled by something--usually coal, oil, but also by heat generated in nuclear power plants. There are a few wind farms and geothermal（地热） plants as well, but by far we get electricity mainly by burning something.
In other words, those "zero-emissions" cars are likely coal-burning cars. Because the coal is burned somewhere else, it looks clean. It is not true. It's as if the California Greens are covering their eyes—“If I can't see it, it's not happening.” Gasoline is an incredibly efficient way to power a vehicle; a gallon of gas has a lot of energy in it. But when you take that gas（or another fuel）and first use it to make electricity, you waste a nice part of that energy, mostly in the form of wasted heat--at the generator, through the transmission lines, etc.
A gallon of gas may drive your car 25 miles. But the electricity you get from that gallon of gas won't get you nearly as far -- so electric cars burn more fuel than gasoline-powered ones. If our electricity came mostly from wind or geothermal, or solar, then an electric car truly would be clean. But for political, technical, and economic reasons, we don't use much of those energy sources.
In addition, electric cars' batteries which are poisonous for a long time will eventually end up in a landfill. And finally, when cars are the polluters, the pollution is spread across all the roads. When it's a power plant, though，all the junk is in one place. Nature is very good at cleaning up when things are not too concentrated, but it takes a lot longer when all the garbage is in one spot. What’s the main idea of the passages?
| A．Electric cars aren’t actually clean. |
| B．Electric cars are zero-emissions vehicles. |
| C．Zero-emissions vehicles are popular. |
| D．Gasoline-powered cars are more efficient. |
Which of the following words can replace “be clueless about” in Paragraph 2?
| A．Be familiar with． |
| B．Be curious about． |
| C．Fail to understand． |
| D．Show their interest in． |
The electricity we get from a gallon of gas may make our car run _________.
| A．at least 25 miles |
| B．more than 25 miles |
| C．as far as 25 miles |
| D．less than 25 miles |
In the author’s opinion, compared with cars using gas, electric cars are more __________.
| A．environmentally-friendly | B．expensive |
| C．efficient | D．harmful |
It can be inferred from the passage that __________.
| A．electric cars' batteries are poisonous for a long time |
| B．now electric cars are used more than their gasoline-powered cousins |
| C．zero-emissions vehicles should be chosen to protect our environment |
| D．electric cars are not clean in that we get electricity mainly by burning something |
If you are in a town in a western country, you'll often see people walking with their dogs. It is still true that a dog is the most useful animal in the world. But the reason why one keeps a dog has changed Once upon a time, a man met a dog and wanted it to help him in the fight against other animals, and he found that the dog listened to him and did what he told him to. Later people used dogs for the hunting other animals, and the dogs didn't eat what they got until their master agreed. So dogs were used for driving sheep and guarding chicks. But now the people in the towns and cities do not need dogs to fight other animals. Of course they keep them to frighten thieves, but the most important reason is that people feel lonely in the city. For a child, a dog is his best friend when he has no friends to play with. For a young wife, a dog is her child when she doesn’t have her own. For old people, a dog is also a child when their real children have grown up and left. Now people do not have to use a dog, but they keep it as a friend, just like a member of the family._______are more useful than a dog in the world.
| A．No other animals | B．Some animals | C．Many animals | D．A few animals |
In the past people kept dogs because dogs _________.
| A．could fight against other animals | B．met the people |
| C．did not eat other animals | D．helped and listened to people |
Now people keep dogs in the cities because dogs_____.
| A．fight other animals | B．are lonely |
| C．are like their friends | D．are afraid of the thieves |
A dog can be _____.
| A．a child's friend only | B．a young woman's son |
C．old people 's real child |
D．everybody's friend |
So a dog will __ in a family.
| A．always be used | B．not be useful |
| C．still fight | D．always be a good friend |
If you want to get the most out of the study of a language, you must also read for pleasure: novels, plays, travel books, and so on. And in reading books of this kind the important thing is to get on with the reading; to try to grasp what the writer is going to tell you in the book as a whole. This is impossible if you stop and think over the meaning of every single word which happens to be unfamiliar(不熟悉). You can not enjoy a story if you stop half a dozen times on every page in order to look up words in the dictionary. You may even prevent yourself from understanding the story as a whole by doing this.
When you are reading books of this kind, therefore, you will usually have to rely mainly on(依靠) the context (上下文) to help you. If you meet an unfamiliar word, do not let it take too much of your attention from the main thread(主线) of the story. In all probability(可能) you will meet the same word again a few pages later on in a slightly different context, and each time you see it that your understanding of it will become more exact.To read for pleasure means _____________.
| A．to take pleasure in reading |
| B．to be satisfied in reading book |
| C．to read such books as novels, plays, travel books, etc |
| D．to go on with reading pleasantly |
The phrase “to ge
t on with reading” in the passage has the same meaning as “_________”.
| A．to try to grasp the meaning of every sentence in the book |
B．to try to catch the meaning of every word i n the book |
| C．to try to understand all the writer is going to tell you |
| D．to try to understand the main idea of the book |
、When you meet new words in reading such kinds of books, you’d better _________.
| A．stop and look them up in a dictionary | B．stop and think them over |
| C．try to guess their meanings from the context | D．have none of them |
According to the passage the best way to read novels, plays and travel books is _____.
| A．to read very slowly | B．to read quickly and not too carefully |
| C．to read very carefully | D．to read very seriously |
The best title for this passage is “___________”.
| A．Read for Pleasure | B．Get on with the Books |
| C．Reading Skills | D．The Importance of Reading |
As people slowly learn to cure diseases, control floods, prevent hunger, and stop wars, fewer people die every year. As a result, the population of the world is becoming larger. In 1925 there were about 2 billion people in the world; today there are over 6 billion.
When the number rises, extra mouths must be fed. New lands must be brought under development, or land already farmed must be made to produce more crops. In some areas the land is so over-developed that it will be difficult to make it provide more crops. In some areas the population is so large that the land is divided into too tiny units to make improvement possible with farming methods. If a large part of this fa
rming population went into industrial work, the land might be farmed much more productively (多产地) with modern methods.
There is now a race for science, technology, and industry to keep the output of food rising faster than the number of people to be fed. New types of crops, which will grow well in bad weather, are being developed, so there are now farms beyond the Arctic Circle in Siberia and North America. Irrigation (灌溉) and dry-farming methods bring poor lands under the plough. Dams hold back the waters of great rivers, which can provide water for the fields in all seasons and provide electric power for new industries. Industrial chemistry provides fertilizer to suit different soils. Every year, some new methods are made to increase or to protect the food of the world. The author says that the world population is increasing because _____.
| A．there are many rich valleys and large fields |
| B．farmers are producing more crops than before |
| C．people are living longer due to better living conditions |
| D．new lands are being made into farmlands |
The author says that in areas with large populations, land might be more productively farmed if _____.
| A．the land was divided into smaller pieces |
| B．people moved into the countryside |
| C．industrial methods were used in farming |
| D．the units of land were much larger |
We are told that there are now f
arms beyond the Arctic Circle. This has been made possible by _____.
| A．growing new types of crops |
| B．irrigation and dry-farming means |
| C．providing fertilizers |
| D．destroying pests and diseases |
Why is the land divided into tiny units in some areas?
| A．There are too many people living there. |
| B．It saves more natural resources there. |
| C．It prevents crops from serious diseases there. |
| D．Farmers can grow various kinds of crops there. |
Why do some people use dams to hold back waters from great rivers?
| A．To develop a new kind of dry-farming methods. |
| B．To prevent crops from floods. |
| C．To provide water and electricity in all seasons. |
| D．To water poor lands in bad weather. |
Most shops in Britain open at 9:00 am, and close at 5:00 or 5:30 in the evening. Small shops usually close for an hour at lunchtime. On one or two days a week—usually Thursday and/or Friday—some large food shops stay open until about 8:00 pm for late night shopping.
Many shops are closed in the afternoon on one day a week. The day is usually Wednesday or Thursday and it is a different day in different towns.
Nearly all shops are closed on Sundays. Newspaper shops are open in the morning, and sell sweets and cigarettes as well. But not all the things can be sold on Sundays.
Usually it is not difficult for foreign visitors to find where to buy things. Most shops sell the things that you want to buy. One problem is stamps. In Britain you can only buy these at post offices. Many large food shops are self-service. When you go into one of these shops, you take a basket and you put the things you wish to buy into this. You pay for everything just before you leave. If anyone tries to take things from a shop without paying they are almost certain to be caught, because most shops have detectives.
When you are waiting to be served in a shop, it is important not try to be served before people who arrive before you. Many foreign people are surprised at the British way of queuing (排队).Most shops in Britain stay open for about ______ a day.
| A．eight hours | B．five hours | C．ten hours | D．six hours |
According to the passage, which of the following statements is NOT true?
| A．Some large food shops open for about 11 hours on Thursday or Friday. |
| B．Many shops are closed in the afternoon once a week on Tuesday. |
| C．Only a few things can be bought on Sundays. |
| D．It is not difficult for foreign visitors to buy things in Britain. |
You can not buy ______ in shops.
| A．cigarette. | B．sweets. | C．stamps. | D．clothes. |
Which of the following statements is TRUE?
| A．Most shops usually close for an hour at lunchtime. |
| B．Many large shops are self-service. |
| C．Most shops have detectives. |
| D．People do not have to queue to be served. |
Which of the following statements can be the best title of this passage?
| A．Shops in Britain |
| B．How to buy things in Britain? |
| C．The British Way of Queuing |
| D．How long are the British shops? |
A well-dressed man entered a famous jewelry shop. He explained that he wished to buy a pearl for his wife’s birthday. The price didn’t matter. Since business had been very good for him that year. After examining a nice black one that cost $5000, he paid for the pearl in cash, shook hands with the jeweler, and left.
A few days later the man returned and said that his wife liked the pearl so much that she wanted another one just like it. It had to be exactly the same size and quality, as she wanted a pair of earrings made, “Can you give me any advice on how to get such a pearl?” said the man. The jeweler regretfully replied, “I would say it’s exactly impossible to find one exactly like that pearl.”
The rich man insisted that the jeweler advertise in the newspapers, offering $ 25,000 for the matching pearl. Many people answered the advertisement but nobody had a pearl that was just right.
Just when the jeweler had given up hope, a little old lady came into his store. To his great surprise, she pulled the perfect pearl from her purse. “I don’t like to part with it,” she said sadly, “I inherited it from my mother, and my mother inherited it from hers. But I really need the money.”
The jeweler was quick to pay her before she changed her mind. Then he called the rich man’s hotel to tell him the good news. The man, however, was nowhere to be found.The man said he wanted to buy a pearl for ______.
| A．his wife | B．his mother -in–law |
| C．his own mother | D．no one |
He paid $ 5,000 for the black pearl without bargaining because ______.
| A．he was very rich | B．he wanted to make the jeweler believe him |
| C．he was anxious to get it | D．his business had been successful |
He told the jeweler to get him another pearl that must be ______.
| A．exactly the same size as the black one |
| B．exactly the same quality as the black one |
| C．worth no more than $ 25,000 |
| D．exactly as big and nice as the black one |
Many people answered the advertisement because they wanted _______.
| A．to see the perfect pearl |
| B．to buy some beautiful pearls too |
| C．to get in touch with the rich man |
| D．to sell their own pearl at a high price |
The jeweler couldn’t find the man anywhere because ______.
| A．he died suddenly. |
| B．He happened to be out |
| C．He got $ 20,000 by cheating and had run away with the money. |
| D．He wouldn’t show up until the jeweler called him a second time. |