題目列表(包括答案和解析)
C
SAN FRANCISCO--- As skies are filled with millions of migrating birds, Europeans scientists say the seasonal miracle appears to depend on a seeming contradiction: The fatter the bird, the more efficiently it flies.
The result of their study contradict a central theory of aerodynamics(空氣動力學(xué)), which predicts that the power needed to fly increases with weight.
For birds, apparently, the cost of flying with heavy fuel loads is considerably smaller than previously thought.
Researchers found that red knot wading birds double their normal body weight of 100 grams before making their twice-a-year, non-stop commute(路程) between the British Isles and the Russian Arctic. Distance: 5,000 kilometers.
Another study in the journal Nature measured the benefits of flying in an aerodynamic V formation, which allows bird to save energy by gliding in the lead bird’s air stream.
Flying in formation, their heart rates were as much as 14.5 percent lower than flying solo, according to Henri Weimerskirch, a French scientist. The findings help explain how birds complete difficult migrations.
Researchers had assumed that thinner, more athletic birds would have the best chance of survival.
The first study suggests that building up fat deposits(存放) to be burned as fuel during the migrating is worth more than the energy it takes to carry the additional weight. In the study, researchers said their team studied the birds flown at different body masses during 28 simulated(模擬) flights. They were injected with a small amount of water containing a radioactive element that enabled the team to measure the amount of energy burned.
63. Researchers used to believe_______.
A. the thinner a bird is, the less energy it needs to fly
B. migratory birds make a journey from the British Isles to the Russian Arctic
C. aerodynamics makes no sense
D. birds eat more before they begin their migrations
64. According to the passage, birds prefer to fly in the V formation rather than fly solo because_____.
A. it is against aerodynamic to fly in the V formation
B. they can save energy while migrating
C. they won’t get lost with a bird leading the way
D. in this way their heart beat faster so that they can fly faster
65. The researchers didn’t ______ in the study.
A. inject the birds with water containing a radioactive element
B. watch birds of different body masses in simulated flights
C. take the birds’ heart rates
D. feed the birds to fatten them
66. The best title of the passage should be _______.
A. Birds Fatten up for Journey B. Migratory Birds in Europe
C. New Findings D. Migrating in V formation
Microsoft founder Bill Gates said that he planned to give away almost all of his vast① fortune, largely to the cause of global health, during the course of his lifetime. With an estimated② worth of more than $ 40 billion, according to Forbes, the project will be no small feat③ for Gates. Having already provided the Bill & Melinda Gates Foundation with $ 24 billion to address global health issues, Gates said that eventually his entire fortune will be put towards the cause except “a few percent left for the kids.”
So what has made the richest man in the world to channel his resources so heavily into one interest? Gates believes that “the equality of opportunity” in which Americans take such pride needs to extend to other nations around the world. Improving the health of the populations, he says, has proven to be an essential method in helping poor countries to be financially④ successful. “National borders allow inequalities,” said Gates, “We all need to take a more global view, rather than just saying my country is doing well. We have to step up these health issues, knowing how few resources are going into them.”
Gates said that both his parents set good examples to him as a child. His father, William H. Gates, was the head of the local Planned Parenthood, and his mother, Mary, volunteered for the United Way. As he gathered his fortune, Gates knew he would eventually want to give back as well, but he didn’t expect to devote himself whole-heartedly to one project until he was about 60.
However, Gates, 47, began to question his ability to wait that long. “It seemed there was a real time urgency,” Gates said, “I started to think, how many lives could I save before then?”
Notes:
vast adj. 巨額的
estimate v. 估計，估價
feat n. 功績，壯舉
financially adv. 財政上，金融上
Choose the best answers according to the above:
Why will Bill Gates give away his vast fortune?
A. to improve the health of population in America alone
B. to improve the health of population all over the world
C. to avoid leaving his children too much money
D. to spare the American government the burden of health care
According to the passage, which of the following is right?
A. Americans should care about people in other countries
B. Americans should treat fellow citizens well
C. Americans should devote themselves to certain projects
D. Americans can be world-famous by giving away vast fortune
Bill Gates gave away his vast fortune earlier than he had expected because of __.
A. his weakening health condition
B. his parents’ suggestions
C. his great success in business
D. his concerns for suffering people
According to the passage, which word can be used to describe Bill Gates?
A. brave B. kind-hearted C. strong-minded D. confident
一．根據(jù)首字母或中文完成句子：
1.At the museum, visitors are requested not to touch the e_______________.
2.The government yesterday ____(宣布) to the media that they would create some new jobs.
3.The IT i___________ is playing an important role in the development of economy.
4.Though caught in a snowstorm, the pilot g _________ the plane to a safe landing.
5.Three fourths of the earth’s s ________ is covered with water, our earth is an ocean planet.
6.I feel really happy to be e _________ in this famous university to teach advanced English.
7.He was too ____________ (沒經(jīng)驗) for the job. He worked here no more than three days .
8.Many young soldiers helped to r ___________ people from the fire of the hotel. One of them was killed and some were injured.
9.Some students in our class are worried about their p _______ and want many people to like them.
10.He suddenly experienced a f ____ of shame when his name was mentioned at the meeting.
11.My computer c ______ suddenly last night and all of my documents I was working on got lost.
12.The child was t __________ at the piano his parents sent to him on his birthday.
13.This machine is used to ___________ (監(jiān)測) a patient’s pulse.
14.The decision was c ________ by all the members.
15.He seems to be honest and trusted, but in r ________ he often tells lies.
16.He has an e __________ talent for music.
17.I think that we have many o __________ of meeting interesting people on the train when traveling.
18.Matter has three states . For example, water is ___________(液體).
19.A number of parents have v _______ concern about their children’s safety.
20.She d ________ a talk on philosophy during her visit to her mother school.
根據(jù)首字母或中文提示，補全單詞。（20分）
【小題1】That kind of electronic dictionaries is well designed, and it is especially s______ for high school students learning English.
【小題2】“Are famous film stars always getting leading roles in movies?” “Not n________.”
【小題3】With the development of economy, a lot of companies have s______up in the industrial area.
【小題4】Going the shopping mall, you will see T-shirts in a wide v______ of colors intended for all kinds of people.
【小題5】The electric products produced in our company have good quality and usually a three-year g________.
【小題6】Professor Tudor is leaving for New York to attend an important international medical c________ next week.
【小題7】At the exhibition we saw a kind of record player, which had to be w________ up by hand and could only play for two minutes.
【小題8】This small electronic device is used to control an e_______ current passing through the machine.
【小題9】I’ve got two tickets for tonight’s concert given by the Russian artists. Would you like to a__________ me to go and enjoy it, Amy?
【小題10】I have total f_______in my best friends and believe that they are honest in this case.
【小題11】Their company bought the __________（專利） and applied the technology to create the new type of car.
【小題12】It is considered that digital TV is ___________(優(yōu)越的) to satellite TV because it allows the same services to be delivered with clearer pictures.
【小題13】All of them said they didn’t like the design, but p________(就個人而言 ) I thought it was very fashionable.
【小題14】Five years after the International standards for digital TV were established ________（消費者）could have access to more than 200 channels in the USA.
【小題15】The Chinese __________（電信） industry is huge, and the amount of profit involved is unbelievably enormous.
【小題16】The boy tried to work out the maths problem by drawing a __________（平行線） between the two sides.
【小題17】I don’t think this program is practical and capable of calculating your_______（預(yù)算） for the year.
【小題18】By that time, digital TV ________（信號）had been received by 55 percent of households in the European country.
【小題19】With interactive TV programming, you can play along with game shows, respond to ________________（問卷） and chat to other viewers.
【小題20】These measures to be taken soon will all bring great _________________（方便） and delight to the citizens’ lives.
根據(jù)首字母或中文提示，補全單詞。（20分）
1.That kind of electronic dictionaries is well designed, and it is especially s______ for high school students learning English.
2.“Are famous film stars always getting leading roles in movies?” “Not n________.”
3.With the development of economy, a lot of companies have s______up in the industrial area.
4.Going the shopping mall, you will see T-shirts in a wide v______ of colors intended for all kinds of people.
5.The electric products produced in our company have good quality and usually a three-year g________.
6.Professor Tudor is leaving for New York to attend an important international medical c________ next week.
7.At the exhibition we saw a kind of record player, which had to be w________ up by hand and could only play for two minutes.
8.This small electronic device is used to control an e_______ current passing through the machine.
9.I’ve got two tickets for tonight’s concert given by the Russian artists. Would you like to a__________ me to go and enjoy it, Amy?
10.I have total f_______in my best friends and believe that they are honest in this case.
11.Their company bought the __________（專利） and applied the technology to create the new type of car.
12.It is considered that digital TV is ___________(優(yōu)越的) to satellite TV because it allows the same services to be delivered with clearer pictures.
13.All of them said they didn’t like the design, but p________(就個人而言 ) I thought it was very fashionable.
14.Five years after the International standards for digital TV were established ________（消費者）could have access to more than 200 channels in the USA.
15.The Chinese __________（電信） industry is huge, and the amount of profit involved is unbelievably enormous.
16.The boy tried to work out the maths problem by drawing a __________（平行線） between the two sides.
17.I don’t think this program is practical and capable of calculating your_______（預(yù)算） for the year.
18.By that time, digital TV ________（信號）had been received by 55 percent of households in the European country.
19.With interactive TV programming, you can play along with game shows, respond to ________________（問卷） and chat to other viewers.
20.These measures to be taken soon will all bring great _________________（方便） and delight to the citizens’ lives.
國際學(xué)校優(yōu)選 - 練習(xí)冊列表 - 試題列表
湖北省互聯(lián)網(wǎng)違法和不良信息舉報平臺 | 網(wǎng)上有害信息舉報專區(qū) | 電信詐騙舉報專區(qū) | 涉歷史虛無主義有害信息舉報專區(qū) | 涉企侵權(quán)舉報專區(qū)
違法和不良信息舉報電話：027-86699610 舉報郵箱：58377363@163.com