题目
题型：陕西省同步题难度：来源：
B．Global warming-a world problem
C．The fast increase in recent years
D．What we should do to avoid greenhouse gases producing
E．The earth is becoming warmer
F．Different opinions on the cause of global warming
Is the world warming up? According to many reports, the answer is yes. Eleven of the hottest years
since 1850 appeared between 1995 and 2006. Last year, the United Nation"s Intergovernment Panel on
Climate Change (IPCC) reported the earth was about 0.75 ? warmer than it was in 1850. While this
doesn"t sound like a lot, a small difference in average temperature can make a big difference in climate.
During the last Ice Age, the planet was only about five degrees colder than now.
2．________
It"s all about the speed at which temperatures are changing. In the past,temperatures moved up or down step by step. But in the 20th century, especially since 1976, temperatures have likely risen more quickly
than during any century in the last 1000 years. Warming may bring improved harvests to northern countries such as Canada and Russia. However, many species won"t like these conditions. They begin moving
towards cooler places and cause lots of trouble to human world.
3．________
The IPCC reported that human activity is very likely responsible for increasing the greenhouse effect.
Some gases cause the air to take in heat energy. Without the greenhouse effect, the earth"s average
temperature would be－18? rather than the present comfortable 14.6 ?. The main greenhouse gases are
carbon dioxide, water vapor and some other gases. Burning oil,coal and waste add to the carbon dioxide,
and it has increased 35% since 1850.
4．________
Many researchers have found that natural forces alone don"t explain the temperature increases over the
last 30 to 40 years. Their study shows that as carbon dioxide goes up, temperature will rise, too. But some scientists don"t agree. They think the effect of human produced greenhouse gases is very small compared
to the normal changes that the climate causes.
5．________
When asked whether humans are causing the world warming,Carl Wunsch, a professor at Massachusetts Institute of Technology says, "It seems very likely from what I"ve seen. Is it 100% sure? No. There is
something to do with natural changes." Does that mean we should have a "waitandsee" attitude? No. He
points out we buy house insurance not because we are sure our homes will be on fire, but because it"s a
danger we"d rather avoid.
答案
核心考点
试题【根据短文内容,从下框的A～F选项中选出能概括每一段主题的最佳选项,选项中有一项为多余项.A. The likely reason of global warm】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
them too often or because other students can _1_ them.
Pronunciation is the area which is _2_ the least attention to in language learning. Most teachers _3_
just let their students speak and stop them 4 they say something completely wrong. Working on each
student"s pronunciation in class is just 5 . Also, the students who are 6 at pronunciation may be afraid
that it will embarrass their classmates if they help 7 their mistakes.
If you believe your pronunciation is good enough to 8 because it is good enough for your teacher
and other students, you may be 9 when you actually go to a foreign country. One of my friends was
the best student in his 10 class in Poland. When he went to America, he found Americans didn"t
understand 11 of what he said.
Your pronunciation may still be quite 12 that of a native speaker. If this is the 13 , other people
will find it 14 to understand what you"re saying and will not be comfortable with you.
15 , don"t think you can communicate in a foreign language 16 you"ve tested your skills on real
native speakers. 17 for native or nearnative pronunciation so that people you talk to can communicate with you 18 . In order to achieve this goal, there"s 19 that you will need to start thinking about
pronunciation and 20 time on it.
| ( )1. A. mistake ( )2. A. fixed ( )3. A. never ( )4. A. only if ( )5. A. fantastic ( )6. A. poor ( )7. A. find out ( )8. A. communicate ( )9. A. happy ( )10. A. Polish ( )11. A. none ( )12. A. near to ( )13. A. same ( )14. A. easy ( )15. A. In conclusion ( )16. A. when ( )17. A. Stand ( )18. A. smoothly ( )19. A. no way ( )20. A. take | B. watch B. drawn B. ever B. if only B. impossible B. well B. work out B. travel B. disappointed B. French B. half B. different from B. matter B. beneficial B. In a word B. until B. Look B. difficultly B. no need B. cost | C. surround C. paid C. even C. even if C. necessary C. good C. try out C. pronounce C. surprised C. German C. rest C. far from C. case C. convenient C. On the contrary C. unless C. Aim C. truly C. no doubt C. spend | D. understand D. called D. usually D. if ever D. important D. strict D. point out D. exchange D. excited D. English D. lot D. from far D. fact D. hard D. In short D. while D. Account D. practically D. no wonder D. kill |
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| Even plants can run a fever, especially when they"re under attack by insects or disease. But unlike human, plants can have their temperature taken from 3,000 feet away-straight up. A decade ago, adopting the infrared(红外线)scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide(***虫剂)spraying rather than rain poison on a whole field, which invariably includes plants that don"t have pest problems. Even better, Paley"s Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3,000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a colourcoded map showing where plants were running "fevers". Farmers could then spotspray, using 50 to 70 percent less pesticide than they otherwise would. The bad news is that Paley"s company closed down in 1984, after only three years. Farmers resisted the new technology and longterm backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation. Agriculture experts have no doubt the technology works. "This technique can be used on 75 percent of agricultural land in the United States, " says George Oerther of Texas A & M. Ray Jackson, who recently retired from the Department of Agriculture, thinks remote infrared crop scanning could be adopted by the end of the decade. But only if Paley finds the financial backing which he failed to obtain 10 years ago. 1. Plants will send out an increased amount of heat when they are________. A. facing an infrared scanner B. sprayed with pesticides C. in poor physical condition D. exposed to excessive sun rays 2. In order to apply pesticide spraying precisely, we can use infrared scanning to________. A. estimate the damage to the crops B. draw a colourcoded map C. measure the size of the affected area D. locate the problem area 3. Farmers can save a considerable amount of pesticide by________. A. resorting to spotspraying B. transforming poisoned rain C. consulting infrared scanning experts D. detecting crop problems at an early stage 4. The application of infrared scanning technology to agriculture met with some difficulties-_______. A. its high cost B. the lack of official support C. the lack of financial support D. its failure to help increase production 5. Infrared scanning technology may be brought back into operation because of________. A. full support from agricultural experts B. growing concern about the excessive use of pesticides on crops C. the forceful promotion by the Department of Agriculture D. the desire of farmers to improve the quality of their produce | |||
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| Nuclearpowered aircraft carriers are considered one of the most important marine weapons in the 20th century. So far, only two countries in the world, the USA and France, have ever produced them. But these fearful fighting machines are about to enter Asia. The US Navy said last month that one of its nine nuclearpowered aircraft carriers will be sent to Japan to replace the diesel(柴油)powered carrier Kitty Hawk in 2008. In an agreement on October 30, the two countries also planned to level up their military (军事的) cooperation and the USA called for Japan to take a larger role in alliance military moves. It will be the first time that a nuclearpowered carrier is based in Japan. Bombed by US forces in World War ? at Hiroshima and Nagasaki, Japan is the only world country to have been attacked by a nuclear weapon. Therefore, the citizens are highly sensitive to where nuclearpowered weapons are based. "A radiation leak at Yokosuka would kill 100,000 people as far away as Tokyo, and could cause billions of dollars in damage, " said Masahiko Goto, leader of a protest group in Yokosuka. His group has collected more than 300,000 signatures of people across Japan opposed to the nuclear carrier. The 44yearold Kitty Hawk, the US Navy"s oldest active ship, has been based in Yokosuka since 1998. It had returned to the US to be decommissioned in 2008. The new carrier, yet to be unveiled,_ will travel faster, be capable of supporting longer operations and carry with it the Navy"s most modern technology. Experts pointed that this change is not only to strengthen the USJapan military alliance but also to keep the military power of China and North Korea within limits. However, even Japanese experts don"t believe that the two countries are threats to the region. "There is no need for Japan to have a nuclear carrier as defense, " said Tetsuo Maeda, an international relations professor at Tokyo International University. He said that the change of ship indicates an increased military capability in the region, much more than what is needed. 1. With such a formidable weapon to enter its country, Japanese citizens ________. A. are aware of its benefits to the country B. are anxious about its potential danger C. are curious about the advanced technology D. are against where the carrier will be based 2. The replacement of the aircraft carrier is intended to________. A. set up a kind of base in Japan B. strengthen the USJapan military alliance C. show Japan"s greater military capability D. get rid of the dated marine weapon 3. From the story, we learn that________. A. no other countries except the USA and France possess aircraft carriers B. Japan has long planned to increase its military capability with new weapons C. Japan will be the first country in Asia to have a nuclear aircraft carrier D. Japan will be the third country to produce a nuclearpowered aircraft carrier 4. The underlined word "unveiled" in the fifth paragraph probably means________. A. perfected B. discussed about C. produced D. brought to view 5. By his remark in the last paragraph, the professor means that________. A. he is quite confident of their military defense B. he is completely opposed to a new nuclear carrier C. what is needed is far more than a nuclear carrier D. it is unnecessary to guard against the two countries | |||
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| I heard many parents complaining that their teenage children are rebelling. I wish it were so. At your age you ought to be growing away from your parents. You should be learning to stand on your own two feet. But take a good look at the present rebellion. It seems that teenagers are taking the same way of showing that they disagree with their parents. Instead of striking out boldly on their own, most of them are clutching (紧握) at one another"s hands for reassurance. They claim they want to dress as they please. But they all wear the same clothes. They set off in new directions in music. But somehow they all end up huddled (聚在一起) round listening to the same record. Their reason for thinking or acting in thusandsuch a way is that the crowd is doing it. They have come out of their cocoon (蚕茧) into a larger_cocoon. It has become harder and harder for a teenager to stand up against the popularity wave and to go his or her own way. Industry has firmly carved out a teenage market. These days every teenager can learn from the advertisements what a teenager should have and be. And many of today"s parents have come to award high marks for the popularity of their children. All this adds up to a great barrier for the teenager who wants to find his or her own path. But the barrier is worth climbing over. The path is worth following. You may want to listen to classical music instead of going to a party. You may want to collect rocks when everyone else is collecting records. You may have some thoughts that you don"t care to share at once with your classmates. Well, go to it. Find yourself. Be yourself. Popularity will come-with the people who respect you for who you are. That is the only kind of popularity that really counts. 1. In this passage, the author wants to tell ________. A. teenagers to try to pursue their real selves B. readers to try to be popular with people around C. parents to try to control and guide their children D. people to try to understand and respect each other 2. The author disapproves of rebelling teenagers ________. A. growing away from their parents B. following the popularity trend C. walking a new way on their own D. turning to their friends for help 3.The phrase "larger cocoon" at the end of the second paragraph refers to ________. A. the distractive and variable society B. the dazzling music world C. the parental care and love D. the popularity wave in the society 4. What does the author think of advertisements? A. Convincing. B. Instructive. C. Influential. D. Authoritative. 5. According to the author, what might happen when a teenager stands up against the popularity wave and follows his/her own path? A. He/She falls behind the time. B. He/She loses good friends. C. He/She faces all kinds of criticism. D. He/She gains valuable popularity. | |||
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| The practice of magic includes special words, actions, and objects. Most magic involves a person called a magician, who claims to have supernatural powers. Magic words. To work most magic, the magician sings or speaks special words in a certain order. These words are called incantations or spells. Some spells form prayers to demons(魔鬼), spirits, or other supernatural forces. Many societies believe the magic will not work unless the magician recites the spells perfectly. Other magic words have no meaning, though they supposedly possess power when spoken by a magician. Magic actions accompany the words spoken in performing much magic. Many of these movements act out the desired effect of the magic. For example, a magician trying to make rain fall may sprinkle(洒) water on the ground. The magician"s combined words and actions form a ceremony. Magic objects include certain plants, stones, and other things with supposed supernatural powers. Any such object may be called a fetish(物神). But this term often refers to an object-for example, a carving or a dried snake-honored by a tribe for its magic powers. Many tribes believe fetishes have magic power because spirits live in these objects. Many people carry magic objects called amulets(护身符)to protect themselves from harm. Many amulets are stones or rings engraved(雕刻) with magic symbols. The magician. In some societies, nearly everyone knows how to work some magic. In other societies, only experts practice magic. Magicians may be called medicine men, medicine women, shamans, sorcerers, or witch doctors. In many societies, magicians must inherit their powers. In others, any person may become a magician by studying the magical arts. Many societies believe magicians must observe certain rules and taboos (forbidden actions) for their spells to work. For example, they may be required not to eat various foods or to avoid sexual activity for a certain period before the ceremony. 1. What do magic words mean to people in some society? A. They have the power to kill devils. B. They have power if magician recites the right spells. C. They have no effect at all. D. They can be used whenever they want. 2. People believe magic actions will have an effect if they are accompanied by________. A. the spells B. magic objects C. stones or rings engraved with magic symbols D. medicine 3. Why do many people believe in a fetish? A. Because it is often a ring which is worth a lot of money. B. Because it is carved with magic symbols. C. Because people think spirits live in it. D. Because it can help them with many things. 4. According to the passage what kind of person can become a magician? A. Only those studying the magical arts. B. Only those inheriting their powers. C. Only men. D. Almost all the people in some societies. 5. What"s the best title of the passage? A. How Magic Works B. The Power of Magic C. How to Practice Magic D. The Choice of Magicians |