All the useful energy at the surface of the earth comes from the activity of the sun. The
The sun is the source of all of the following EXCEPT______.
A.gasoline
B.natural gas
C.atomic power
D.animal fat
The sun is the source of all of the following EXCEPT______.
A.gasoline
B.natural gas
C.atomic power
D.animal fat
A.prove
B.proves
C.have been proved
D.are proved
The author mentions food, tools and precious metals and stones together because they are all ________. A. useful items B. articles of value C. difficult things to obtainD. material objects
A.it is still well-received by all the staff members today
B.it is valuable to the employer and the employee
C.it is helpful for attracting young employees
D.it is both useful and interesting
Coal, oil, natural gas, and all other fuels are stored-up energy from the sun. Some was collect ed by this season's plants as carbon compounds. Some was stored by plants and trees ages ago.
Even waterpower derives from the sun. Water turned into vapor by the sun falls as rain. It courses down the mountains and is converted to electric power.
Light transmits only the energy that comes from the sun' s outer layers, and much of this energy that is directed toward the earth never arrives. About nine-tenths of it is absorbed by the atmosphere of the earth. In fact; the earth itself gets only one half-billionth of the sun' s entire output of radiant energy.
All the useful energy at the surface of the earth comes ______.
A.directly from the sun
B.from the sun' s activity
C.from energy stored by the sun
D.from radiation of the sun
完成下列各题 The people who lives in the far North are called Eskimos(爱斯基摩人).In the world of ice and snow it is 21 to grow plants for food.The Eskimos must hunt and fish during the whole year to 22 themselves and their families with food.In winter,they hunt the seal(海豹) 23 the polar(极地的)bear.When they hunt the seal,they 24 a hole in the ice and try to 25 the seal when it comes up to breathe. In summer,the Eskimos hunt 26 animals。and they also hunt birds and catch fish. 27 that is useful is saved.The Eskimos use the meat from animals for food.They melt(融化)the fat from their bodies and use the 28 as fuel(燃料).They make tools out of animals bones.The skin and furs of animals are used for making clothing. If an Eskimo is 29 lucky,he may kill a whale(鲸鱼), 30 a dead whale may wash up on the shore near his house.The whale is an especially useful animal,because it gives a great 31 of oil. There is 32 wood at all where the Eskimos live.Eskimos 33 all their wood from the sea.Sometimes floating wood from places.farther south washes up on the shore. Most Eskimo houses are 34 of stones.Instead of a door,there is a long,low tunnel (地道) 35 into the house.People have to crawl(爬)through the tunnel in order to enter the house.
A.important
B.impossible
C.impolite
D.interesting
Five hundred years ago, news of important happenings--battles lost and won, kings or rulers overthrown or killed--took months and even years to travel from one country to another. The news passed by word of mouth and was never accurate. Today we can read in our newspapers of important e vents that occur in faraway countries on the same day they happen.
Apart from supplying news from all over the world, newspapers give us a lot of other useful in formation. There are weather reports, radio, television and film guides, book reviews, stories, and, of course, advertisements. There are all sorts of advertisements. The bigger ones are put in by large companies to bring attention to their products. They pay the newspapers thousands of dollars for their advertising space, but it is worth the money, for news of their products goes into almost every home in the country. For those who produce newspapers, advertisements are also important. Money earned from advertisements makes it possible for them to sell their newspapers at a low price and still make a profit.
The habit of reading newspapers is ______.
A.widespread
B.found among a few families
C.not popular
D.uncommon
Most institutions provide courses which【43】new students to develop the skills they need to be【44】listeners and note-takers.【45】these are unavailable, there are many useful study-skills guides which【46】learners to practice these skills【47】. In all cases it is important to【48】the problem【49】. actually starting your studies.
It is important to【50】that most students have difficulty in acquiring the language skills【51】in college study. One way of【52】these difficulties is to attend the language and study-skills classes, which most institutions provide throughout the【53】year. Another basic【54】is to find a study partner【55】it is possible to identify difficulties, exchange ideas and provide support.
(66)
A.extending
B.illustrating
C.performing
D.conducting
??The people who lives in the far North are called Eskimos(爱斯基摩人).In the world of ice and snow it is(1)to grow plants for food.The Eskimos must hunt and fish during the whole year to(2)themselves and their families with food.In winter,they hunt the seal(海豹)(3)the polar(极地的)bear.When they hunt the seal,they(4)a hole in the ice and try to(5)the seal when it comes up to breathe.??
??In summer,the Eskimos hunt(6)animals.and they also hunt birds and catch fish.(7)that is useful is save D.The Eskimos use the meat from animals for food.They melt(融化)the fat from their bodies and use the(8)as fuel(燃料).They make tools out of animals bones.The skin and furs of animals are used for making clothing.??
??If an Eskimo is(9)lucky,he may kill a whale(鲸鱼),(10)a dead whale may wash up on the shore near his house.The whale is an especially useful animal,because it gives a great(11)of oil.??
??There is(12)wood at all where the Eskimos live.Eskimos(13)all their wood from the sea. Sometimes floating wood from places.farther south washes up on the shore.??
??Most Eskimo houses are(14)of stones.Instead of a door,there is a long,low tunnel (地道)(15)into the house.People have to crawl(爬)through the tunnel in order to enter the house.??
A.important
B.impossible
C.impolite
D.interesting
()A.another
B.other
C.others
D.new
()A.Something
B.Everything
C.Anything
D.Nothing
()A.fat
B.1iquid
C.oil
D.rest
()A.supply
B.find
C.look for
D.give
()A.or
B.and
C.but
D.with
()A.much
B.often
C.not
D.very
()A.not
B.no
C.none
D.1ittle
()A.find
B.have
C.receive
D.get
()A.built
B.constructed
C.made
D.piled
()A.going
B.coming
C.1eading
D.winding
()A.many
B.much
C.number
D.deal
()A.find
B.cut
C.beat
D.strike
()A.kill
B.beat
C.hold
D.catch
()A.and
B.or
C.otherwise
D.but
请帮忙给出每个问题的正确答案和分析,谢谢!
In the playground Bob showed me the watch. He put it on his wrist, and it looked love ly. I wished I had been the one to sit by the table. It was really a beautiful watch, gold by the look of it. The headmaster came outside then, and the doctor was with him. They walked about, looking around and talking all the time. After a while the bell rang, and we got into our lines, ready to go in.
The headmaster said, "I've got a little job for boys. This doctor, who was giving us a talk just now, has lost his watch in the playground. It happened before, he says- it just slips off his wrist. So look around for it, will you? See if you're clever enough to find it. I promise that the boy who does so will get a useful reward."
Of course, Bob was not going to miss a chance like that. He's just about the luckiest boy in the school rewards just drop into his hands. We all walked about the playground, looking here and there for the watch. And I wasn't at all surprised when Bob bent down as if he was picking something up. Then he hurried past me towards the doctor.
"Where are you going?" I called out, though I knew very well where he was going. The next minute there was Bob, all smiles, handing over the watch to the old doctor and hanging about for the reward.
But the doctor did not seem at all pleased. In fact he looked quite ready to thrust (插入) a knife in Bob's heart-until the headmaster burst out laughing. Bob told me later the old man hadn't even said "Thank you" for the watch.
The thing that puzzled us most of all was that Bob didn't get any reward. When he mentioned to the headmaster about k, the old man said, "Ah, yes, we mustn't forget that. I said ' a useful re ward' , didn't I?" Then he gave Bob a big sheet of paper and told him to write a composition on the harm of smoking. Bob says he hasn't got any idea of what to write.
While the doctor was talking about the harm to smoking, the two boys were______.
A.not thinking about anything
B.thinking about the harm of smoking
C.thinking about the watch and how to get it, perhaps
D.thinking that the headmaster was very clever
People living in different countries made different kinds of words. Today there are about fifteen hundred different languages in the world. Each contains many thousands of words. A very large English dictionary, for example, contains four or five hundred thousand words. But we do not need all these. Only a few thousand words are used in everyday life.
The words you know are called your vocabulary. You should try to make your vocabulary bigger. Read as many books as you can. There are plenty of books written in easy English for you to read. You will enjoy them. When you meet a new word, find it in your dictionary. Your dictionary is your most useful book.
From this passage, we know that ______.
A.man never made sounds
B.man made animal sounds
C.man used to be like animals to make sounds
D.man learned from the animals to make sounds
Why should he be so afraid? There are hundreds of cities and thousands of villages where he can hide. There are large forests and deserts where he can lose himself. Besides, he's usually rich with stolen money.
Money can make it easier to hide. With money, the criminal can pay a dishonest doctor to operate on his face and make him hard to recognize. Money can pay for a hideout in some far-off place. But the criminal knows what happened to public enemies such as John Dillinger, Baby Face Nelson, and Machine Gun Kelly. They had plenty of money and good hideouts. Yet one by one they were found by the men of the FBI.
They know every trick the criminal knows and many more. If he makes just one mistake, they'll get him. That's why the man who is hunted can't sleep. That's why he becomes nervous, why he jumps at every sound. When he makes a mistake, he'll no longer be "wanted by the FBI". He'll have been caught.
The FBI began on May 10, 1924. Attorney General Harlan F. Stone chose J. Edgar Hoover, a young lawyer in the Department of Justice, to head the new agency (机构). "What we need is a wholly new kind of police force," he said. "Criminals today are smart. They use stolen cars and even planes to make their gateways. They have learned to open any lock. The criminal would have discovered science. We can't beat them with old methods. We have to train officers to work scientifically."
J. Edgar Hoover quietly went ahead with his plans. He picked his men carefully. They had to be between the ages of twenty-five and thirty-five. He wanted only men with good manners and good character. When working as his officers they would have to meet all kinds of people. Hoover wanted men who could handle a teacup as well as a gun. He chose men so carefully that he made the FBI the hardest service in the world to get into. The FBI cannot help in every police problem. It can look into only certain crimes against the government. Solving all other crimes is the duty of local police forces.
A man wanted by the FBI will find that money is ______.
A.not at all useful
B.very helpful for a while
C.necessary for staying free
D.important and useful