单选题Ethanol and methanol have important advantages()other carbon-based alternative fuels.AonBoverCbyDwith
单选题
Ethanol and methanol have important advantages()other carbon-based alternative fuels.
A
on
B
over
C
by
D
with
参考解析
解析:
暂无解析
相关考题:
Attention, please. I have ______ to announce. A.important somethingB. an important somethingC. something importantD. important thing
The author of this passage intends to tell us ________.(A) the important role IT managers play(B) the advantages IT managers should have(C) the qualifications IT managers possess(D) the high salaries IT managers earn
The information passed on by word of mouth is important because____.A. ***** through any other sourceB. it helps ***** of the best housing never advertised.C. the final year students always offer better informationD. the landlords have little valuable information
EAll too often , a choice that seems sustainable(可持续的)turns out on closer examination to be problematic. Probably the best example is the rush to produce ethanol(乙醇)for fuel from corn . Corn is a renewable resource —you can harvest it and grow more, almost limitlessly . So replacing gas with corn ethanol seems like a great idea .One might get a bit more energy out of the ethanol than that used to make it, which could still make ethanol more sustainable than gas generally, but that’s not the end of the problem. Using corn to make ethanol means less corn is left to feed animals and people, which drives up the cost of food. That result leads to turning the fallow land — including, in some cases, rain forest in places such as Brazil — into farmland, which in turn gives off lots of carbon dioxide(CO2)into the air. Finally, over many years, the energy benefit from burning ethanol would make up for the forest loss. But by then, climate change would have progressed so far that it might not help.You cannot really declare any practice “sustainable” until you have done a complete lift-cycle analysis of its environmental(环境的)costs. Even then, technology and public policy keep developing, and that development can lead to unforeseen and undesired results. The admirable goal of living sustainable requires plenty of thought on an ongoing basis.57. What might directly cause the loss of the forest according to the text?A. The growing demand for energy to make ethanol.B. The increasing carbon dioxide in the air.C. The greater need for farmland.D. The big change in weather.
There are advantages and disadvantages to 21 Asian and Western educational method. For example, one advantage 22 the education in Japan is that students there learn much more math and science 23 American students. They also study more hours each day than Americans 24 . The study is difficult, but it 25 students for a society that values discipline (纪律) and self-control. There is, however, a disadvantage. Memorization is an important learning method in Japanese schools, 26 many students say that after an exam, they forget much of the information that they have memorized.The advantage to the education in North America, 27 the other hand, is that students learn to think by themselves. The system prepares them for a society that values 28 ideas. There is, however, a disadvantage. When students graduate from high school, they haven't memorized 29 many basic rules and facts as students in other countries 30 .21.A. not onlyB. allC. bothD. only
Tiny atomic electric batteries have certain advantages over the() storage batteries. A、universalB、indlusiveC、indefiniteD、conventional
it is important to develop listening skills together with other skills, especially _________. A、listeningB、writingC、speakingD、reading
CBusinesses are witnessing a difficult time, which has in turn produced influence on consumers’ edsire to go green . However, shoppers are still laying stress on environmental concerns. Two thirds of customers say that environmental considerations inform. their purchases to the same degree as they did a year ago, while more than a quarter say that they are now even better aware of the environmental effect on what they buy. This may help to influence how shops store goods on their shelves. And the companies should still make efforts to become more envitonmentally friendly. Two out of three people think it is important to buy from environmentally responsible companies,with about one in seven saying that they had even decided to take their custom elsewhere if they felt a company’s environmental reputation was not good enough. Harry Morrison, chief executive(主管)of the Carbon Trust, sympathizes:“I understand this situation where survival is very important now. But from environmental considerations, the clocd is ticking—we don’t have much time. In addition, cutting carbon has an immediate effect as costs drop and a mediun-term benefit for the brand.” Larger companies have an extra motivation to look at reducing their carbon footprint, as new rules next year will require businesses bo buy carbon allowances to make up for their emissions(排放). Those that have taken early action will hav e a head start. More than two thirds of consumers are not clear about which companies are environmentally responsible. This suggests that firms that are able to relay clearly their message to the public will be in a pole position to attract shoppers. The Carbon Trust believ es that it can help by informing customers about the good work companies are doing.“When companies are granted(授予)the standard, they can use a logo(标识)in all their marketing which makes it clear that they are working towards cutting emissions,”Mr.Morrison said.64.What’s the main idea of the passage?A.Businesses are finding ways to send their message to the shoppers.B.Companies will soon get information about cutting carbon emissions.C.Firms are making efforts to encourage customers to keep goods at home.D.Firms are urged to cut carbon emissions by shoppers’environmental awareness.
According to Harry Morrison, businesses .A.will benefit from cutting carbon emissionsB.should buy carbon allowances for shoppersC.are required to make up for their carbon emissionsD.have encouraged shoppers to take their custom elsewhere
29. Which of the following is WRONG?A. People can- t live without food.B. There is no need for children to have a good breakfast. .C. Children without breakfast may not study as well as children with breakfast in the morning.D. Breakfast is as important as the.other two meals of the day.
The information passed on by word of mouth is important because____.A. it is better than that found through any other sourceB. it helps you find some of the best housing never advertisedC. the final year students always offer better informationD. the landlords have little valuable information
In the event of fire in a machinery space,______.A.the fixed carbon dioxide system should be used only when all other means of extinguishment have failedB.the fixed carbon dioxide system should be used immediately,as it is the most efficient means of extinguishmentC.water in any form should not be used as it will spread the fireD.the space should be opened 5 minutes after flooding CO2 to prevent injury to personnel
We are pleased to know that you have planned to come to the Autumn Guangzhou Fair.We wish to discuss with you some other important things if you could come()your earliest convenience.A、byB、onC、inD、at
单选题The passage suggests that learning to speak and learning to ride a bicycle are _____.Adifferent from learning other skillsBthe same as learning other skillsCnot really important skillsDmore important than other skills
单选题We are pleased to know that you have planned to come to the Autumn Guangzhou Fair.We wish to discuss with you some other important things if you could come()your earliest convenience.AbyBonCinDat
单选题(), so they are widely used on board ship nowadays.ADiesel engines have more advantages in comparison with gasoline enginesBDiesel engines have more advantages in comparison to gasoline enginesCGasoline engines have more advantages in comparison with diesel enginesDGasoline engines have more advantages in comparison to diesel engines
单选题Why greenhouse gases are one of the best indicators of ecological overdraft?AThe cost of carbon emission permits is driven down.BTrade for carbon market failed.CGreenhouse gases are the most important guideline of ecology.DThe global economy is overwhelmingly fossil-fuel dependent.
单选题Ethanol is commonly used as a gasoline supplement, but it is currently about()methanol.Atwice as expensive asBtwice as more expensive asCas twice more expensive asDas twice expensive as
问答题Practice 5 For two or three candidates I’m going to describe a situation. The retail company you work for is planning to improve its website. Talk together about some of the things that are important for the improvement of the website and decide which 3 you think are most important. * three minutes for groups of three candidates Prompt material ●Contents ●Design ●Computer system ●Personal firewall Follow-up questions: (1) Do you think a company’s website is important? (2) Do you often surf the internet to get some useful information? (3)What are the advantages for a company to have a website?
单选题From the author’s comments and the example of the bulls (paragraph 4), what was the most likely reason for which Hemingway took care to include details of place?AHe felt that geography in some way illuminated other, more important events.BHe thought readers generally did not have enough imagination to visualize the scenes for themselves.CHe thought that landscapes were more important than characters to convey “the way it was.”DHe felt that without background information the readers would be unable to follow the story.
判断题Headhunters or executive search firms specialize in finding the right person for the right job. When a company wishes to recruit a new person for an important position, it may use the services of such a firm. The advantages for the employer are that it does not have to organize the costly and time-consuming process of advertising, selecting and interviewing suitable applicant. In some cases, the search firm may already have a list of people with the appropriate skills for the job. If this is not the case, then it may act as a consultant, advising or even organizing tests and simulations to evaluate candidates’ behavior in order to select the most competent person for the job.Search firms often have their own talent pool or human resource ban.A对B错
问答题Li-Ning has two key advantages in reaching the all-important youth market: its products are about half as expensive as those of its foreign rivals, and its network of stores dwarfs that of any other player. To date, though, Li-Ning has been most successful in smaller cities and towns. To really take on the foreign brands, it needs to make a renewed push into the likes of Beijing, Shanghai, and Guangzhou. “Li-Ning is using the Mao Zedong strategy to build expertise in second and third-tier cities,” says an industry veteran, “now they have to gain footholds in China’s biggest cities.”
单选题The combustion of larger molecules,()have multiple carbon-carbon bonds involves a more complex series of reactions.AwhatBwhichCthatDwho
单选题It can be concluded from the passage that ______.Alarge families may be considered as a heavy burden by the rural poorBthe actions of national and international power brokers have an important effect upon the decision made by the rural poorCthe actions of those with the highest fertility, the rural poor, ultimately determine the rate of population growthDhaving large families had more advantages than disadvantages in those poor areas
单选题Ethanol and methanol have important advantages()other carbon-based alternative fuels.AonBoverCbyDwith
单选题Let's not waste time on matters of no important.We have other vital problems to deal with.ALet's notBmatters of no importantCvitalDdeal with