题目
题型:不详难度:来源:
2 ago experiments showed that birds depend on the sun to guide them 3 . But what about birds that fly mainly by night? 4 with man-made stars have 5 that certain night-flying birds are able to follow the 6 in their long distance flights.
One such 7 , a warbler (鸣禽), had spent its lifetime in a 8 and had never flown under a natural sky. Yet is showed its 9 by birth to use the stars for guidance. The bird"s cage was put under a man-made star-filled sky at migration 10 . The bird tried to fly 11 the same direction as 12 taken by other birds in the building. Any 13 in the position of the make-believe (虚构的) stars 14 a change in the direction of its flight.
Scientists think that warblers, 15 flying in daylight, use the sun for guidance. But stars are clearly their important 16 of navigation(导航). What do they do when the stars are 17 behind the clouds? Clearly, they find their way by such land 18 as mountains, coastlines and river courses. But when it"s too 19 to see these, the warblers circle 201 , unable to find out where they were.
1. A. reply B. answer C. discovery D. replies
2. A. Not long B. Long C. Centuries D. Years
3. A. during the night B. during daylight hours
C. in winter D. in the dark
4. A. Examinations B. Labs C. Tests D. In the dark
5. A. been proved B. found C. been found D. proved
6. A. stars B. moon C. route D. sun
7. A. star B. scientist C. bird D. flight
8. A. forest B. cage C. nest D. cave
9. A. strength B. ability C. experience D. practice
10. A. time B. place C. way D. season
11. A. to B. towards C. in D. under
12. A. that B. which C. one D. it
13. A. one B. change C. way D. bird
14. A. caused B. gave C. resulted D. meant
15. A. for B. when C. after D. they are
16. A. ways B. means C. objects D. homes
17. A. shown B. covered C. moved D. hidden
18. A. areas B. surface C. marks D. signs
19. A. far B. high C. dark D. bright
20. A. helplessly B. quickly C. easily D. freely
答案
解析
2. not long ago对应上段结尾的lately。
3. 下文“But...by night”提示此处与之相对而言。上文的sun也暗示了在白天。
4. 通过“测试”证明……
5. 当prove意思是“证明或证实……的结果”时不用被动语态。
6. 见下段中间:“...use the stars for guidance”。
7. warbler为鸟中的一类。
8. 下文第二句中有提示,本为“笼”中之鸟。
9. 利用星星导航是鸟类天生就有的一种“能力”。
10. D为可数名词,须有冠词,且与空白前的at搭配不当。
11. 朝……方向,用“in...direction”。
12. that指代direction,后有ed形式短语作定语。
13. 此句交代实验中的重要环节,以证实warbler的“ability”。
14. result要和in搭配。
15. 与后面动词use所表示的动作“同时”。
16. 四个选项词义相比,应选means(手段)。
17. 云“遮”星,cover常与with连用。
18. 空白后as所接三个名词(短语)均属land marks(地面标志)。
19. 空白前it指“天”,选dark。
20. helplessly与下文unable相呼应。
核心考点
试题【Why don’t birds get lost on their long migratory (迁移的) flights? Scientists tried】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
"Researchers need to work hard. The work was tiring, but the students worked toward their ambitious goal of achieving a world first. They have a great sense of achievement, and the number of students who hope to become biologists has increased," said Taruma Akinori, who is in charge of the science course.
In addition to the results being added to the scientific community, the students’ research paper will be translated into English and made available overseas. Moreover, the students have decided to take on a new challenge in DNA decoding.
小题1:Which of the following is the most suitable title for the passage?
A.Decoding the blueprint of life |
B.Super Science High School |
C.More students hoping to become biologists |
D.Hi-tech experimental laboratory |
A.hi-tech experimental facilities |
B.the great pressure their school put on them |
C.the increasing number of biologists |
D.little interest in their regular school work |
A.become an English textbook |
B.help the students make English friends |
C.make the results known by the whole world |
D.challenge foreign scientists |
A.indifferent | B.admiring |
C.slighting | D.disappointed |
Foulsham House is a fine,stone house of the 1790s.It stands by the River Byre,in twenty-five hectares(公顷)of the best farmland in the southwest.
Smithson built the house,and the story goes back to George,the young Prince of Wales,who fell in love with the beautiful lady Kitty Wake,at one of the first Lord Foulsham’s wild woods parties.In the past many great men rode on the hills about Foulsham House,and many fine ladies took tea in the Green Room.
The house has eight bedrooms,three bathrooms,two living-rooms and a dining room with a real Adam fire-place(壁炉).The gentleman’s library has a view over the park and the river.All rooms are light and airy(空气通畅的),with wood,high windows,and wood floors.
At the back of the house,where the third Lord Foulsham kept the horses,there is garage-space(停车的地方)for four cars.In many other ways,this house of the 1790s meets the needs of the 2000s.
If you wish to know more about Foulsham House,write to:
Harvey,Platt,Longford & Sons,
6,Castle Green,Gilham,Byreside.
小题1:The writer writes this passage to ________.
A.persuade people to buy it |
B.give some information about Foulsham House |
C.tell a love story |
D.describe the beauty of a best farmland |
A.Smithson built the house for Lord Foulsham’s wild parties |
B.Prince George fell in love with Kitty Wake at Foulsham House |
C.Prince George and Kitty Wake fell in love with the Green Room |
D.Lord Foulsham fell in love with a lady in Wales |
A.has a fine view of the park and the river |
B.is where great men and fine ladies took tea |
C.has an Adam fire-place,and a real wood floor |
D.has eight bedrooms,three bathrooms and two living-rooms |
At the top of the South Pole,any clock or watch keeps good time because all meridians(子午线) join there.All kinds of local time are completely suitable there.It is even difficult to distinguish(区别) New Year’s Eve from New Year’s Day.
The explorers and scientists from different countries always fix the time according to their own.Therefore the time by their watches was different when the people with different nationality gathered there.
The Winter Solstice(冬至日) is an important festival at the South Pole.It is always on June 21 or 22.This day is called Midwinter Festival,on which the daytime is the shortest in a year and the night the longest.All people at the South Pole extend greetings to each other and present gifts to each other.They usually give all kinds of celebrations.From that day on,the daytime will get longer day by day.
小题1:At the top of the South Pole,your watch will ________.
A.keep good time | B.be five minutes fast |
C.stop | D.be ten minutes slow |
A.in the world | B.at the South Pole | C.at the North Pole | D.in China |
A.the night | B.the noon | C.the morning | D.the daytime |
Whatever the cause of the heat may be,we do know that the earth gets hotter the farther down we dig.In deep mines and oil wells the temperatures rise about 1°F for every 50 feet.At this rate of the temperature 40 miles below the earth’s surface should be over 4 000°.This is much hotter than necessary to melt rock.However,the pressure of the rock above keeps most materials from melting at their usual melting points.Geologists believe that the rock deep in the earth may be plastic,or puttylike(油灰状的).In other words,the rock yields slowly to pressure but is not liquid.But if some change in the earth’s crust releases the pressure,the rock melts.Then the hot,liquid rock can move up toward the surface.
小题1:The cause for the great heat inside of the earth is______.
A.great pressure of the earth’s outer layers |
B.the heat left from the time when the earth was formed |
C.radioactive elements giving out heat |
D.not sure |
A.the pressure of the rock itself |
B.the pressure of the rock above |
C.the pressure of the earth’s outer layers |
D.the heat given out by some radioactive elements |
A.The farther down,the hotter the earth gets. |
B.The rock deep in the earth is liquid. |
C.When the pressure releases from the earth’s crust,the rock melts. |
D.Rock would be melted at 4 000°. |
On September 29,1998,Hurricane Georges made landfall in Biloxi,Mississippi,after devastating Haiti,the Dominican Republic,Puerto Rico,and several islands of the Caribbean with torrential rains and winds up to 160 km/h (100 mph).Few people lost their lives along the Gulf Coast of the United States,although hundreds died in the Caribbean.
This was a very different outcome from 1900,when a powerful Gulf Coast hurricane made an unexpected direct hit on Galveston,Texas,killing at least 6 000 people.Vastly improved hurricane warnings explain the different circumstances at either end of the 20th century—residents of Galveston had no advance warning that a storm was approaching,while residents of Biloxi had been warned days in advance of Georges’s approach,allowing for extensive safety precautions.
At the same time that people in Biloxi were thankful for the advance warning,some residents of New Orleans,Louisiana,120 km to the west,were less satisfied.A day before Georges made landfall,forecasters were predicting that the hurricane had a good chance of striking New Orleans.Because much of New Orleans lies below sea level,the city is at risk for flooding.In addition,because New Orleans has a large population in vulnerable locations,emergency management officials must begin evacuations well before a storm strikes.But evacuation costs money:Businesses close,tourists leave,and citizens take precautionary measures.The mayor of New Orleans estimated that his city’s preparations for Georges cost more than 50 million.After the full fury of Georges missed New Orleans,some residents questioned the value of the hurricane forecasts in the face of such high costs.
The differing views on the early warnings for Hurricane Georges illustrate some of the complexities involved in predicting disasters.Disaster prediction is more than just forecasting the future with advanced technology—it is also a process of providing scientific information to the government officials and other decision makers who must respond to those predictions.
In general,the process has three phases.First,there is the challenge of forecasting the event itself.In the case of Georges,scientists worked to predict the future direction and strength of the hurricane days in advance.
A second important challenge is communicating the forecast to decision-makers.Because forecasts are always uncertain,a central factor in disaster predictions is communicating this uncertainty.Uncertainty is usually described in terms of odds or probabilities,much like daily weather forecasts.The media plays an important role in communicating predictions and their uncertainty to the public.
The third part of the process is the use of predictive information by decision makers.Even the most accurate information is of little value if the decision maker does not use it appropriately,for example in deciding whether to order an evacuation.If there is a breakdown in any of these three phases of prediction,the result is increased danger and a higher risk of loss of life.
小题1:The underlined word“calamity”refers to ______.
A.nature | B.thunderstorms | C.disaster | D.dangers |
A.demonstrate the power of advanced technology |
B.bring out the truth between life and death |
C.prevent such natural disasters from happening |
D.reduce human casualties and loss of property |
A.Biloxi,Mississippi. | B.Gulf Coast of U. S. |
C.Galveston,Texas. | D.New Orleans. |
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