理工类职称英语15篇完形填空整理.docx

1、理工类职称英语15篇完形填空整理第一篇 Captain Cook Arrow LegendIt was a great legend while it lasted，but DNA testing has (1) finally ended a two-century-old story of the Hawaiian arrow carved from the bone of British explorer Captain James Cook(2) who died in the Sandwich Islandsin 1779. “There is (3) no Cook in the

2、Australian Museum，museum collection manager Jude Philip said not long ago in announcing the DNA evidence that the arrow was not made of CookS bone.But that will not stop the museum from continuing to display the arrow in its(4) exhibition ，“Uncovered：Treasures of the Australian Museum,” which(5) doe

3、s include a feather cape presented to Cook by Hawaiian King Kalaniopuu in 1778. Cook was one of Britains great explorers and is credited with(6) discovering the“Great South Land，(7) now Australia, in 1 770.He was clubbed to death in the Sandwich Islands，now Hawaii。The 1egend of Cooks arrow began in

4、1824 (8) when Hawaiian King Kamehameha on his deathbed gave the arrow to William Adams，a London surgeon and relative of Cooks wife，saying it was made of Cooks bone after the fatal(9) fight with islanders. In the 1890s the arrow was given to the Australian Museum and the legend continued (10) until i

5、t came face=to-face with science. DNA testing by laboratories in Australia and New Zealand revealed the arrow was not made of Cooks bone but was more (11) likely made of animal bone。said Philp. However, Cooks fans (12) refuse to give up hope that one Cook legend will prove true and that part of his

6、remains will still be uncovered.as they say there is evidence not a11 of Cooks body was (13) buried at sea in 1 779.“On this occasion technology has won，”said Cliff Thornton，president of the Captain Cook Society, in a (14) statement from Britain.“But I am (15) surethat one of these daysone of the Co

7、ok legends will prove to be true and it will happen one day.第二篇 Avalanche and Its Safety An avalanche is a sudden and rapid flow of snow, often mixed with air and water, down a mountainside. Avalanches are (1) among the biggest dangers in the mountains for both life and property.All avalanches are c

8、aused by an over-burden of material, typically snowpack, that is too massive and unstable for the slope (2) that supports it. Determining the critical load, the amount of over-burden which is (3)likely to cause an avalanche, (4) is a complex task involving the evaluation of a number of factors. Terr

9、ain slopes flatter than 25 degrees or steeper than 60 degrees typically have a low (5)risk of avalanche. Snow does not (6)gather significantly on steep slopes; also, snow does not (7)flow easily on flat slopes. Human-triggered avalanches have the greatest incidence when the snows angle of rest is (8

10、)between 35 and 45 degrees; the critical angle, the angle at which the human incidence of avalanches is greatest, is 38 degrees. The rule of thumb is: A slope that is (9) flat enough to hold snow but steep enough to ski has the potential to generate an avalanche, regardless of the angle. Additionall

11、y, avalanche risk increases with (10) use ; that is, the more a slope is disturbed by skiers, the more likely it is that an avalanche will occur. Due to the complexity of the subject, winter travelling in the backcountry is never 100% safe. Good avalanche safety is a continuous (11) process , includ

12、ing route selection and examination of the snowpack, weather (12) conditions , and human factors. Several well-known good habits can also(13) reduce the risk. If local authorities issue avalanche risk reports, they should be considered and all warnings should be paid (14) attention to. Never follow

13、in the tracks of others without your own evaluations; snow conditions are almost certain to have changed since they were made. Observe the terrain and note obvious avalanche paths where plants are （15）missing or damaged. Avoid traveling below others who might trigger an avalanche.第三篇Giant Structures

14、It is an impossible task to select the most amazing wonders of the modern world since every year more 1 wonderful constructions appear. Here are three giant structures which are worthy of our 2 admiration although they may have been surpassed by some more recent wonders.The Petronas Twin Towers1The

15、Petronas Towers were the tallest buildings in the world when they were completed in 1999. With a 3 height of 452 metres, the tall twin towers, like two thin pencils, dominate the city of Kuala Lumpur2. At the 41st floor, the towers are linked by a bridge, symbolizing a gateway to the city. The Ameri

16、can 4 architect Cesar Pelli designed the skyscrapers.Constructed of high-strength concrete, the building provides around l, 800 square metres of office space 5 on every floor. And it has a shopping centre and a concert hall at the base. Other 6 features of this impressive building include double-dec

17、ker lifts, and glass and steel sunshades.The Millau Bridge3The Millau Bridge was opened in 2004 in the Tarn Valley, in southern France. 7 At the time it was built, it was the worlds highest bridge, 8 reaching over 340m at the highest point. The bridge is described as one of the most amazingly beauti

18、ful bridges in the world. It was built to 9 relieve Millaus congestion problems. The congestion was then caused by traffic passing from Paris to Barcelona in Spain. The bridge was built to withstand the 10 most extreme seismic and climatic conditions. Besides, it is guaranteed for 120 years!The Itai

19、pu Dam4 The Itaipu hydroelectric power plant is one of the largest constructions of its kind in the world. It consists of a series of dams across the River Parana5, 11 which forms a natural border betweenBrazil6 and Paraguay. Started in 1975 and taking 16 years to complete, the construction was carr

20、ied out as a joint project between the two 12 countries . The dam is well-known for both its electricity output and its size. In 1995 it produced 78% 0f Paraguays and 25% 0f Brazils 13 energy needs. In its construction, the 14 amount of iron and steel used was equivalent to over 300 Eiffel Towers8.

21、It is a 15 truly amazing wonder of engineering.第四篇 Animals “Sixth Sense” A tsunami was triggered by an earthquake in the Indian Ocean in December, 2004. It killed tens of thousands of people in Asia and East Africa. Wild animals, （1）however, seem to have escaped that terrible tsunami. This phenomeno

22、n adds weight to notions that I they possess a “sixth sense” for （2）disasters, experts said. Sri Lankan wildlife officials have said the giant waves that killed over 24,000 people along the Indian Ocean islands coast clearly （3）missed wild beasts, with no dead animals found. “No elephants are dead,

23、not （4）even dead rabbit. I think animals can （5）sense disaster. They have a sixth sense. They know when things are happening.” H.D. Ratnayake, deputy director of Sri Lankas Wildlife Department, said about one month after the tsunami attack. The （6）waves washed floodwaters up to 2 miles inland at Yal

24、a National Park in the ravaged southeast, Sri Lankas biggest wildlife （7）reserve and home to hundreds of wild elephants and several leopards. “There has been a lot of （8）apparent evidence about dogs barking or birds migrating before volcanic eruptions or earthquakes. But it has not been proven,” sai

25、d Matthew van Lierop an animal behavior（9）specialist at Johannesburg Zoo. “There have been no （10）specific studies because you cant really test it in a lab or field setting2,” he told Reuters. Other authorities concurred with this （11）assessment. “Wildlife seem to be able to pick up certain （12）phen

26、omenon, especially birds there are many reports of birds detecting impending disasters,” said Clive Walker, who has written several books on African wildlife. Animals （13）certainly rely on the known senses such as smell or hearing to avoid danger such as predators. The notion of an animal “sixth sen

27、se”-or （14）some other mythical power-is an enduring one3 which the evidence on Sri Lankas ravaged coast is likely to add to. The Romans saw owls （15）as omens of impending disaster and many ancient cultures viewed elephants as sacred animals endowed with special powers or attributes.第五篇 Singing Alarm

28、s Could Save the BlindIf you cannot see, you may not be able to find your way out of a burning building - and that could be fatal. A company in Leeds could change all that （1）with directional sound alarms capable if guiding you to the exit.Sound Alert, a company （2）run by the University of Leeds, is

29、 installing the alarms in a residential home for （3）blind people in Sommerset and a resource centre for the blind in Cumbria.（4）The alarms produce a wide range of frequencies that enable the brain to determine where the （5）sound is coming from.Deborah Withington of Sound Alert says that the alarms u

30、se most of the frequencies that can be （6）heard by humans. “Its a burst of white noise （7）that people say sounds like static on the radio,”she says. “Its life-saving potential is great.”She conducted an experiment in which people were filmed by thermalimaging cameras trying to find their way out of

31、a large （8）smoke-filled room. It （9）took them nearly four minutes to find the door （10）without a sound alarm, but only 15 seconds with one.Withington studies how the brain （11）processes sounds at the university. She says that the （12）source of a wide band of frequencies can be pinpointed more easily

32、 than the source of a narrow band. Alarms （13）based on the same concept have already been installed on emergency vehicles.The alarms will also include rising or falling frequencies to indicate whether people should go up （14）or down stairs. They were（15）developed with the aid of a large grant from British Nuclear Fuels.第六篇 Car Thieves could Be Stopped Remotely Speeding off in a stolen car, the thief thinks he has got a great catch. But he is in a nasty surprise. The car is fitted with a remote immobilizer and a radio signal from a control center miles away will ensure that