单选题The word "winded" (Line 2, Para. 5) is close in meaning to _______.

单选题[此试题无题干]

单选题Judging from the context, this passage is probably written______.

单选题Passage ThreeQuestions 32 to 35 are based on the passage you have just heard.

单选题Questions 23 to 25 are based on the conversation you have just heard.

单选题 {{B}}Passage Three{{/B}}Questions 33 to 35 are based on the passage you have just heard.

单选题Most mathematicians trust their ________in solving problems and readily admit they would not be able to function without it.

单选题Questions 19 to 21 are based on the conversation you have just heard.

单选题Certain species disappeared or became ________as new forms arose that were better adapted to the Earth's changing environment.

单选题Questions 22 to 25 are based on the conversation you have just heard.

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单选题A.Askhimselfalotofquestions.B.Knowhisownneedsandwants.C.Figureoutwhathisaudienceisinterestedin.D.Puthisnotesinorderahead.

单选题Questions 19 to 21 are based on the passage you have just heard.

单选题As the world continues to recover from the Great Recession, governments and businesses are focused on how to spur economic growth. But if they really want to create jobs, raise incomes, and lift living standards, they should devote more energy to figuring out how to generate economic dynamism over the long term. At times like this, governments tend to champion particular sectors like manufacturing, or industries like green technology. But true dynamism flows from continuous innovation, experimentation, adaptation, and change, all of which raise productivity over time. Those productivity gains, in turn, lift incomes and drive consumption. This fuels more innovation—and a dynamic economy thus expands in a healthy, sustainable way. Unfortunately, economic dynamism can also cause dislocation and disturbance as workers lose jobs in failing companies or in fading industries. Change in the ranking of companies has accelerated in many countries, including the United States, over the last century. The 90 names listed on Standard ＆ Poor's index of major U. S. companies in the 1920s remained there for an average of 65 years. By 1998 a company listed on the S ＆ P 500 could expect to stay there for an average of only 10 years. The distress caused by such turnover causes many people to resist change. But this process, famously labeled "creative destruction" by economist Joseph Schumpeter, frees resources for new uses that can vastly improve life over time. We may have fewer farmers, coachmen, and switchboard operators today than in Schumpeter's time, but We have software engineers, EKG technicians, Google mapmakers, and a host of other occupations people couldn't have imagined back then. The "productivity paradox" is that while we may need fewer workers in certain occupations in the short term, improved productivity leads to a stronger economy as a whole. So policies to spur economic dynamism are essential elements of any strategy to create jobs. How exactly do we foster economic dynamism? Dynamism doesn't turn on whether an economy has a large financial sector, or big manufacturers, or a semiconductor industry, but instead on whether the sectors are competitive or not. Instead of picking winners and pouring out subsidies to them, countries must get the basics right. These include a solid rule of law, with patents and protections for intellectual property, enforceable contracts, and courts to resolve disputes; access to finance, particularly for startups; and an efficient physical and communications infrastructure. Once the basics are in place, the key is ensuring strong competition within sectors. It can be tempting, in the short term, to prop up old industries and preserve outdated jobs. But as Schumpeter said, "With capitalism, we are dealing with an evolutionary process. " Nations that want to move up the list should be prepared to evolve.

单选题Every camera we sell comes with a two-year ______.

单选题 Old people are always saying that the young are not what they were. The same comment is {{U}} {{U}} 1 {{/U}} {{/U}}from generation to generation and it is always true. It has {{U}} {{U}} 2 {{/U}} {{/U}}been truer than it is today. The young are better educated. They have a lot more money to spend and enjoy more freedom. They grow up more quickly and are not so {{U}} {{U}} 3 {{/U}} {{/U}}on their parents. They think more for themselves and do not {{U}} {{U}} 4 {{/U}} {{/U}}accept the ideals of their elders. Events which of older generation remembers {{U}} {{U}} 5 {{/U}} {{/U}}are nothing more than past history. This is as it should be. Every new generation is different from the one that{{U}} {{U}} 6 {{/U}} {{/U}}it. Today the difference is very {{U}} {{U}} 7 {{/U}} {{/U}}indeed. The old always assume that they know best for the simple {{U}} {{U}} 8 {{/U}} {{/U}}that they have been around a bit longer. 'They don't like to feel that their {{U}} {{U}} 9 {{/U}} {{/U}}are being questioned or threatened. And this is precisely {{U}} {{U}} 10 {{/U}} {{/U}}the .young are doing. They are questioning the assumptions of their elders and {{U}} {{U}} 11 {{/U}} {{/U}}their complacency (自满). Office hours, for instance, are nothing more than {{U}} {{U}} 12 {{/U}} {{/U}}slavery. Wouldn't people work best if they were given complete freedom and responsibility? Who said that all the men in the world should wear dull grey suits and convict haircuts? Why have the older generation so often used violence to solve their problems? Why are they so unhappy and guilt- ridden in their personal lives, so {{U}} {{U}} 13 {{/U}} {{/U}}with mean ambitions and the desire to amass (积累) more and more material{{U}} {{U}} 14 {{/U}} {{/U}}? These are not questions the older generation can shrug {{U}} {{U}} 15 {{/U}} {{/U}}lightly. Traditionally, the young have turned to their elders for {{U}} {{U}} 16 {{/U}} {{/U}}. Today, the situation might be {{U}} {{U}} 17 {{/U}} {{/U}}The old-if they are prepared to admit it-could learn a thing or two from their children. One of the biggest lessons they could learn is that enjoyment is not "{{U}} {{U}} 18 {{/U}} {{/U}}". Enjoyment is a principle one could apply to all {{U}} {{U}} 19 {{/U}} {{/U}}of life. It is surely not wrong to enjoy' your work and enjoy your leisure, to .{{U}} {{U}} 20 {{/U}} {{/U}}restricting inhibitions.