题目
题型:不详难度:来源:
C
A long-awaited final report from the Food and Drug Administration (FDA) concludes that foods from healthy cloned animals and their offspring(后代) are as safe as those from ordinary animals, effectively removing the last US regulatory(监管的) barrier to the marketing of meat and milk from cloned cattle, pigs and goats.
The 968-page final report, not yet released but obtained by The Washington Post, finds no evidence to support people’s concerns that food from clones may have hidden risks.
But, recognizing that a majority of consumers are wary of food from clones—and that cloning could damage the good image of American milk and meat—the report includes hundreds of pages of raw(原始的) data so that others can see how it came to its conclusions.
The report also admits that human health concerns are not the only subject raised by the coming-out of cloned farm animals.
“Moral, religious and ethical concerns have been raised,” the agency notes in a document accompanying the report. But the report is “exactly a science-based evaluation.” It reports, because the agency is not authorized by law to consider those subjects.
In practice, it will be years before foods from clones make their way to store shelves in large quantities, in part because the clones themselves are too valuable to kill for meat or milk. Instead, the expensive animals—replicas(复制品) of some of the finest farm animals ever born—will be used firstly as breeding stock to create what supporters say will be a new generation of superior farm animals.
When food from those animals hits the market, the public may yet have its say. FDA officials have said they do not expect to require food from clones to be labeled as such, but they may allow foods from ordinary animals to be labeled as not from clones.
64. What can we infer from the first paragraph?
A. FDA has waited for a long time to get this final report.
B. Products from cloned animals have been put into the market before.
C. People are having the products from cloned animals safely.
D. There have been once opposite opinions against cloned products.
65. What does the underlined word “wary” mean?
A. Disappointed. B. Careful. C. Fond. D. Proud.
66. It will be a few years before foods from clones come into the market, partly because _____.
A. people have little knowledge of the cloned animals
B. supporters can’t give powerful evidence to support that
C. the few cloned animals will first be used to create superior animals
D. they are a new generation for the customers and are too valuable for the customers
67. What can we conclude from the passage?
A. FDA officials encourage people to eat more food from clones.
B. FDA officials think the food from clones will sell better than ordinary food.
C. People only worry about the health problems when it comes to foods from the clones.
D. All the foods will not have detailed labels on them.
答案
64 ---67 D B C D
解析
核心考点
试题【CA long-awaited final report from the Food and Drug Administration (FDA) conclud】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
The world is at a crossroads. The internet and new information technologies are so powerful that no matter what we do, society will change. But the direction has not been decided.
The internet it still in its infancy, but already we see fantastic things appearing as if by magic. Take Linux, the free computer operating system, or Wikipedia, the free encyclopedia. But where technology opens up new possibilities, our intellectual property laws do their best to restrict them. Linux is held back by patents, the rest of the examples by copyright. The public increasingly recognizes the need for reform.
Our manifesto(声明) is to reform copyright laws and gradually abolish(废除) the patent system. We oppose mass surveillance (监视)and censorship(审查制度) on the net, as in the rest of society. We intend to devote all our time and energy to protecting the basal civil liberties on the net and elsewhere.
Political decisions taken over the next five years are likely to set the course we take into the information society, and will affect the lives of millions for many years into the future. The information revolution is happening here and now. It is up to us to decide what future we want.
41. Which of the following statements is NOT true according to the passage?
A. Over the past decade, the volume of file-sharing has increased doubly.
B. Over the past decade, other peer-to-peer(对等网络) services have been beaten down.
C. Copyright laws should be reformed.
D. File-sharing occurs unless a file is sent on the Internet.
42. In the opinion of the writer, the government ________.
A. has to make a choice
B. should stop people sharing the copyrighted files
C. shouldn"t stop people sharing the copyrighted files
D. should monitor all the mail and all encrypted (加密) networks
43. The author"s main purpose in writing the passage is____________.
A. to have the basal citizen"s freedom on the net and elsewhere
B. to establish the patent system
C. to abolish copyright laws
D. to reform computer operating system
44. The underlined word “restrict” in Paragraph 3 most probably means__________.
A. remove B. limit C. close D. reform
45. We can infer from the passage_______________.
A. A new information revolution will be coming.
B. People won"t share copyrighted material on the net
C. People can share the free encyclopedia
D. The future of the Internet will rely on the government
Because a GPS has to receive a signal from space, physical impediments(遮挡) like skyscrapers, cliff faces, and even trees can stump(阻断) it. Reception is less of an issue with the ultrasensitive(超灵敏) chipsets in newer models, but if the walls are closing in on you, take a tip from a time when navigation systems weren"t the streamlined panels they are today: Hooking up an antenna(天线) will make use of even the most tenuous celestial connection. There"s a port on the back of most GPS devices for jacking in.
You"ll also want to remember that a GPS is not a compass: It runs on software. Like your PC, it needs to communicate with the mother ship periodically. Vendors(供应商) refresh firmware and maps on a regular basis, sometimes even daily. These updates deliver new bits of data that significantly affect your gadget"s accuracy. But if you live in the boonies(郊区) on a road named after your sister-wife, don"t expect NavTeq to come a-knocking with its survey equipment. Fortunately, most companies make it easy to update your own maps. Usually it"s as simple as plugging into your home computer, dropping a couple of pins in Google Maps, and clicking Save.
If you own a new Tom Tom, it"s even easier. You can edit maps on the unit itself, though you might not have to: Some of the company"s navigation updates themselves. Tom Tom"s IQ Routes software takes data from every person who uses the company" gadgets and readjusts its assumptions about which roads you should use and how long a given route will take. It will even change its own maps.
See, it"s not that hard: Your GPS may use NASA technology, but getting the most out of it isn"t rocket science.
46. The writer thinks the useful electronic partner is __
____besides a cell phone when driving outdoors.
A. a GPS B. Tom Tom"s IQ Routes C. a PC D. NASA
47. Which statement is NOT true about a GPS according to the passage?
A. It receives a signal from space.
B. It is not a compass.
C. It needs to refresh its information.
D. It has no port to connect other equipment.
48. You may learn from the passage that Tom Tom (Para 4) is _______.
A. a GPS receiver
B. a device that can be used to edit maps
C. a device that can be used to update software
D. a person who readjusts GPS assumptions
49. The main idea of the last paragraph is _______.
A. that we should make the most of GPS in rocket science
B. that getting the most out of GPS is too difficult
C. getting the most out of GPS is very easy
D. GPS owns NASA technology
50. Which is not mentioned about a GPS according to the passage?
A. Its usage. B. Its price and shape. C. Its technology. D. Its benefit.
B
A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin cancer, actually increases the risk.
Research from the University of Iowa based their findings on a review of 18 earlier studies that looked at the association between sunscreen use and melanoma (黑素瘤). They said that they found flaws in studies that had reported associations between sunscreen use and higher risk of melanoma.
Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helps prevent skin cancer, which is increasing in incidence (发生率) faster than any other cancer in the United States.
But questions have been raised about sunscreen and whether it may have the opposite effect by allowing people to remain exposed to the sun longer without burning.
The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin cancer---are more likely to use sunscreen. As a result, it may appear that sunscreen users get cancer more often.
The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study.
60.The underlined word “flaws” in the 2nd paragraph most probably means _________.
A.evidences B.facts C.faults D.failures
61.People with fair skin and freckles ________.
A.seldom use sunscreen B.are more in danger of skin cancer
C.can be free from the harm of the sun D.often expose themselves to the sun
62.We can learn from the passage that _________.
A.sunscreen users get skin cancer more often
B.the volunteers have proved the effect of the sunscreen
C.the new study has based on the experiences of volunteers
D.the number of skin cancer patients is increasing in America
63.Which of the following is the best title of the passage?
A.Sunscreen to Prevent Skin Cancer B.Sunscreen to Increase Skin Cancer
C.Skin Cancer Caused by Sunscreen D.Skin Cancer Caused by Freckles
C
Wind is the movement of air from an area of high pressure to an area of low pressure. In fact, wind exists because the sun unequally heats the surface of the Earth. As hot air rises, cooler air moves in to fill the gap. As long as the sun shines, the wind will blow. And as long as the wind blows, people will manage it to power their lives.
Ancient sailors used sails to capture the wind and explore the world. Farmers once used windmills to grind their grains and pump water. Today, more and more people are using wind turbines to make electricity from the breeze. Over the past decade, wind turbine use has increased at more than 25 percent a year. Still, it only provides a small part of the world"s energy.
Most wind energy comes from turbines that can be as tall as a 20-story building and have three 200-foot-long (60-meter-long) blades. These devices look like giant airplane propellers(螺桨)on a stick. The wind spins the blades, which turn a shaft connected to a generator.
The biggest wind turbines generate enough electricity to supply about 600 U.S. homes. Wind farms have tens and sometimes hundreds of these turbines lined up together in particularly windy spots, like along a ridge. Smaller turbines set up in a backyard can produce enough electricity for a single home or small business.
Wind is a clean source of renewable energy that produces no air or water pollution. And since the wind is free, operational costs are nearly zero once a turbine is erected. Mass production and technology advances are making turbines cheaper, and many governments decrease tax to encourage wind-energy development.
Some people think wind turbines are ugly and complain about the noise the machines make. The slowly rotating blades(螺旋风片) can also kill birds and bats, but not nearly as many as cars, power lines, and high-rise buildings do. The wind is also changeable: If it"s not blowing, there"s no electricity generated.
Nevertheless, the wind energy industry is increasing sharply. Globally, generation more than quadrupled(四倍) between 2000 and 2006. At the end of last year, global capacity was more than 70,000 megawatts. In the energy-hungry United States, a single megawatt is enough electricity to power about 250 homes. Germany has the most installed wind energy capacity, followed by Spain, the United States, India, and Denmark. Development is also fast growing in France and China.
Industry experts predict that if this pace of growth continues, by 2050 the answer to one third of the world"s electricity needs will be found blowing in the wind
63. According to the passage, which of the following statements is true?
A. The rotating blades can kill as many birds as high-rise buildings do
B. Single families are not encouraged to build turbines.
C. The USA produces more wind power than any other country in the world.
D. The noise the turbines make may discourage people from building them.
64. The underlined word “generator” in the third paragraph probably means_______.
A. 电动机 B. 发电机 C. 机翼 D. 飞机引擎
65. If the USA wants to build wind turbines in an area with 30,000 homes, how many
should they build at least?
A. 50. B. 150. C. 250. D. 200.
66. All the following are the advantages of wind energy EXCEPT that_________.
A. it is environmentally friendly B. it is free to build and operate
C. the government supports it D. the energy is clean and renewable
第二节:完形填空(共20题:每题1.5分,满分30分)
阅读下面短文,掌握大意,然后从36~55各题所给的四个选项(A、B、C和D)中,选出最佳选项。
In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed 36 .
Today things are 37 . The world has become too 38 . We are using up our natural resources too quickly, and the same time we are 39 our environment with dangerous chemicals. If we 40 to do this, human life on the earth will not survive.
Everyone 41 today that if too many fish are taken from the sea, there will soon be no fish left. Yes, with modern fishing 42 , more and more fish are caught. We know that if too many trees are cut down, 43 will disappear and nothing will grow on the land. But we continue to use 44 and more powerful machines to 45 more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die. 46 , in most countries waste products are 47 put into rivers or into the sea, and there are 48 laws to stop this.
We know, too, that if the 49 of the world continues to rise at the present rate, in a few years, there will not be enough 50 . What can we do to solve these problems?
If we eat more vegetables and less 51 , there will be more food available for everyone. Land where we grow crops 52 five times more people than land where animals are kept.
Our natural resources will 53 longer if we learn to recycle them.
The world population will not rise so quickly if people use modern methods of birth 54 .
Finally, if we educate people to think about the problems, we shall have a better and cleaner 55 in the future.
36. A. beautiful B. unlimited C. little D. valuable
37. A. common B. the same C. changeable D. different
38. A. crowded B. small C. dirty D. busy
39. A. protecting B. saving C. polluting D. fighting
40. A. try B. continue C. decide D. have
41. A. wonders B. realizes C. considers D. discovers
42. A. poles B. thoughts C. methods D. ideas
43. A. mountains B. the sea C. trees D. forests
44. A. bigger B. less C. smaller D. higher
45. A. grow up B. plant C. save D. cut down
46. A. Thus B. However C. Generally speaking D. Therefore
47. A. still B. even C. also D. certainly
48. A. many B. enough C. some D. few
49. A. production B. pollution C. population D. revolution
50. A. houses B. vegetables C. food D. lives
51. A. feeds B. meat C. fish D. grain
52. A. feeds B. increases C. supplies D. helps
53. A. use B. stay C. keep D. last
54. A. control B. born C. plan D. reward
55. A. nature B. sea C. planet D. Forest
最新试题
- 1细菌以分裂方式生产新的个体,1个变2个,2个变4个,假如细菌30秒分裂一次,3分钟后,共有细菌____个。
- 2如图所示,此时ABC弧线上的太阳高度角为0°,某人正在距离B地正南方2775km的某地肉眼观测北极星.观测到的北极星平均
- 3请注意听短文内容,填入所缺的词。(听两遍) Look at this picture. The girl in
- 4 2011年3月10日上午9时,第十一届全国人民代表大会第四次会议在人民大会堂举行第二次全体会议,听取全国人大常委会委员
- 5如下图所示,图(甲)测电笔的笔尖A应该是 (选填“导体”或“绝缘体”);在图(乙)和图(丙)中
- 6如图所示,将薄木片从木梳的梳齿上以不同速度滑过,可以用来研究乐音特征( )A.响度B.音调C.音色D.以上都可以
- 7m是方程x2-x-2=0的根,则m2-m=______.
- 8已知集合
- 9我国现在不少领导干部在为政一方时,习惯于“拍脑袋”决策,“拍胸脯”作保证,出了事“拍屁股”走人。群众戏称这类干部为“三拍
- 10下列各句中加点成语使用恰当的一句是(3分)( )A.以前没有看过卓别林的喜剧,今天看了,逗得大家哈哈大笑,所有的烦恼都
热门考点
- 1小题1:今天天气很好。为什么不出去散散步? It’s fine today. ____________ go out f
- 2(一) 2009年7月23日,成都市中级人民法院对发生在2008年底的孙伟铭无行驶证且醉酒驾车造成四死一重伤案进行了公开
- 3小品《钟点工》里的女主人公曾说过一句经典台词:“你瞧我浑身上下净名牌,美国著名歌星麦当娜穿啥我穿啥。”这种跟风随大流、追
- 4写出下列变化的化学方程式.(1)一种暗红色粉末在氧气中燃烧,并产生大量白烟.______(2)一种淡黄色粉末在空气中燃烧
- 5朱熹提出“存天理,去人欲”,其中“天理”主要是指[ ]A.天体运行法则 B.社会发展规律 C.封建道德规范和等级
- 6我国为了降低汽车的汽油消耗量,在汽油中加入燃料R,R完全燃烧时发生如下反应:R+3O2 点燃 . 2CO2+3H2O,则
- 7PH﹤7的液体是A.蒸馏水B.肥皂水C.食盐水D.柠檬水
- 8若3x 3m+5n+9﹣5y 4m﹣2n﹣7=7是关于x,y的二元一次方程,则的值等于( ).
- 9选出与画线部分意思相同或相近的选项。1. Many old things are on display in the m
- 10下列各组词语中,没有错别字的一组是A.纵横驰骋相形见拙措手不及B.虎视眈眈为虎作怅发愤图强C.沽名钓誉事必躬亲顾影自怜D