How many years did the wars between Xiang Yu and Liu bang last?

A．A.160 B．B.l80 C．C.200 D．D.All the countries in the world

A．2,400 B．1,200 C．200 D．3600 此题为多项选择题。

A．One B．Two C．Three D．Four

A．26 years. B．33 years. C．44 years. D．57 years.

A．98 B．99 C．100 D．101

While consumers pay for perceived shortages at the pump, scientists and economists struggle to reach consensus over "proven oil reserves," or how much oil you can realistically mine before recovery costs outstrip profits. Economist Leonardo Maugeri fired up the debate that accused the "oil doomsters" of crying wolf. Oil pessimists estimate that maximum oil production around the globe will peak in 2008 as demand rises from developing economies such as China. "If you squeezed all the oil in Iraq into a single bottle, you could fill four glasses, with the world consuming one glass of oil each year," says a physicist. "We've consumed nine bottles since oil was discovered, and we have another 9 or 10 in the refrigerator. How many more are there？ Some say five or six, but we say three." Others believe, like Maugeri, that the number of glasses is virtually limitless. John Felmy, chief economist at the American Petroleum Institute, argues that peak oil-production estimates are so far off that. "Ever since oil was first harvested in the 1800s, people have said we'd run out of the stuff," Felmy says. In the 1880s a Standard Oil executive sold off shares in the company out of fear that its reserves were close to drying up. Some scientists said in the 1970s that we'd hit peak oil in 2003. It didn't happen. If there is an end to the debate, advanced oil-recovery technologies will most likely find it. A new seismic survey technique, for instance, sends sound waves of varying frequencies thousands of meters belowground. Microphones arrayed aboveground record the reflected signals, and computer software models a 3-D portrait of possible oil hot spots. The surveys have now added a fourth dimension, creating a time-lapse simulation of fluid movements. Companies are also finding sophisticated ways to mine more oil from existing wells. Flexible, coiled-tube drills that carve out horizontal side paths are a marked improvement over conventional, rigid drills that move only straight down. Using such technology, companies hope to soon harvest 50 to 60 percent of oil from existing wells, up from today's 35 percent. Biotechnology, too is keeping the black gold flowing. University of Albert scientists are searching for microorganisms that could dilute viscous, hard-to-recover oil and make it flow more freely. "Technology can help push peak oil production further and further out," says an expert. But only time will tell when oil production will peak. According to the passage, which of the following statements is true？ A．How long the oil age will last is simply an academic question. B．The oil price this year set a new record. C．Shell Group reduced its reserves to 4.5 billion barrels this year. D．Economists disagree with one another on how much oil you can realistically mine.

A．distortion B．diversion C．dissipate D．discount

A．Eleven. B．Six. C．Five.

A．One hour. B．Thirty minutes. C．One and half hours.

Some people try at home, with books and records or tapes; some use radio or television programmes; others go to evening classes.If they use the language only twice or three times a week, learning it will take a long time.A few people try to learn a language fast by studying for six or more hours a day.It is clearly easier to learn the language in the country where it is spoken.However, most people cannot afford this, and for many it is not necessary.They need the language in order to do their work better.For example, scientists and doctors chiefly need to be able to read books and reports in the foreign language.Whether the language is learnt quickly or slowly, it is hard work.Machines and good books will help, but they cannot do the student's work for him. 36.The advertisements say it would be easy to(). A.speak your native language better B.keep in mind any foreign language C.learn a foreign language within several weeks D.learn by heart a foreign language 37.Nowadays most people want to learn()according to the text. A.about the country where a language is spoken B.to speak a foreign language C.to read essays in the foreign language D.to write in the foreign language 38.Before the World War people usually learnt a foreign language in order to() A.communicate with their foreign friends B.read the foreign newspaper C.read the literacy works of the country D.work in that foreign country 39.If you only use the language twice or three times a week,(). A.it is easy to learn it well B.it will take a long time to learn the foreign language C.you will never learn the language well D.perhaps you will learn harsh language 40.No matter how quickly or slowly you want to learn a foreign language, you need to (). A.read books B.read reports C.visit the country D.work hard

A.1 B.2 C.3 D.4

There was a certain artist who was always very careful to pay the proper amount. One year, after posting his check as usual, he began to wonder if he had paid enough, and after a lot of work, with a pencil and paper, he decided that he had not.He believed that he owed the government something. He was just writing another check to send to the tax-collector when the postman dropped a letter into the box at the front door.Opening it, the artist was surprised to find inside it a check for five pounds from the tax-collector.The official explained that too much had been paid, and that therefore the difference was now returned to the taxpayer. 21.It is mentioned in the passage that one has to pay tax according to(). A.how much education one has received B.whether one is single or married C.how old one's children are 22.The underlined word "proper" in the second paragraph means(). A.small B.big C.right 23.After a lot of work, the artist thought that he had paid the government() A.less tax than he should have B.more tax than he should have C.as much tax as usual 24.What did the artist receive() A.A check from the bank clerk. B.A check from the tax-collector. C.A gift from the tax-collector. 25.Why did that tax-collector send a letter to the artist() A.To send him a new tax form. B.To return the money over-paid. C.To remind him of paying the tax.

One year，after posting his check as usual，he began to wonder if he had paid enough，and after a lot of work，with a pencil and paper，he found that he had not. He thought that he owed the government something. He was just writing another check to send it to the tax collector when the postman dropped a letter into the box at the front door. Opening it，the artist was surprised to find inside it a check for five pounds from the tax collector. The official explained that too much had been paid，and that therefore the difference was now returned to the taxpayer. 11. According to the passage，to decide the exact amount of tax to be paid is ____________. A. simple B. easy C. difficult D. interesting 12. It is mentioned in the passage that one has to pay tax according to ____________. A. how much education one has received B. whether one is single or married C. how old one’s children are D. where one lives 13. The word “proper” in the second paragraph means __________. A. small B. big C. right D. wrong 14. After a lot of work，the artist thought that he had paid the government ____________. A. less tax than he should have B. more tax than he should have C. as much tax as usual D. just enough tax 15. Why did the tax collector send a letter to the artist？ A. To send him a new tax form. B. To return the money overpaid. C. To remind him of paying the tax. D. To explain the rules of tax paying.