题目内容
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A.The replacement of the harpsichord by the piano.
B.The development of electronic musical instruments.
C.The relative costs of different types of musical instruments.
D.The performance of classical music on synthesizers.
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TEXT 2 1.Even though they possess much more computing, bandwidth, and energy resources than mote-class sensors, mobile devices nevertheless face resource limitations. 2.Resource constraints in traditional sensor networks have been well studied. 3.However, MCS applications introduce new aspects in this regard. 4.First, the set of devices that are collecting sensor data are highly dynamic in availability and capabilities. 5.Due to this highly dynamic nature, modeling and predicting the energy, bandwidth requirements to accomplish a particular task is harder than traditional sensor networks. 6.Second, when there are a large number of available devices with diverse sensing capabilities, identifying and scheduling sensing and communication tasks among them under resource constraints is more complex. Source: Ganti, R. K., Ye, F. & Lei, H. (2011). Mobile crowdsensing: Current state and future challenges. IEEE Communications Magazine, 49 (11): 32-39.
A.The lack of time.
B.The quality of life.
C.The frustrations at work.
D.The pressure on working families.
B.She missed the comforts of home.
C.She was impressed by Mexican food.
D.She will not go to Mexico again.
A.At a fair.
B.At a cafeteria.
C.In a computer lab,
D.In a shopping mall.
根据下列短文，回答下列各题。 Whats hot for 2007 among the very rich？ A $7.3 million diamond ring. A trip to Tanzania to hunt wild animals. Oh, and income inequality. Sure, some leftish billionaires like George Soros have been railing against income inequality for years. But increasingly, centrist and right-wing billionaires are starting to worry about income inequality and the fate of the middle class. In December, Mortimer Zuckerman wrote a column in U.S. News & World Report, which he owns. "Our nations core bargain with the middle class is disintegrating," lamented (哀叹) the 117th-richest man in America."Most of our economic gains have gone to people at the very top of the income ladder. Average income for a household of people of working age, by contrast, has fallen five years in a row." He noted that "Tens of millions of Americans live in fear that a major health problem can reduce them to bankruptcy." Wilbur Ross Jr. has echoed Zuckermans anger over the bitter struggles faced by middle-class Americans. "Its an outrage that any Americans life expectancy should be shortened simply because the company they worked for went bankrupt and ended health-care coverage," said the former chairman of the International Steel Group. Whats happening？ The very rich are just as trendy as you and I, and can be so when it comes to politics and policy. Given the recent change of control in Congress, the popularity of measures like increasing the minimum wage, and efforts by Californias governor to offer universal health care, these guys dont need their own personal weathermen to know which way the wind blows. Its possible that plutocrats (有钱有势的人) are expressing solidarity with the struggling middle class as part of an effort to insulate themselves from confiscatory (没收性的) tax policies. But the prospect that income inequality will lead to higher taxes on the wealthy doesnt keep plutocrats up at night. They can live with that. No, what they fear was that the political challenges of sustaining support for global economic integration will be more difficult in the United States because of what has happened to the distribution of income and economic insecurity. In other words, if middle-class Americans continue to struggle financially as the ultrawealthy grow ever wealthier, it will be increasingly difficult to maintain political support for the free flow of goods, services, and capital across borders. And when the United States places obstacles in the way of foreign investors and foreign goods, its likely to encourage reciprocal action abroad. For people who buy and sell companies, or who allocate capital to markets all around the world, thats the real nightmare. What is the current topic of common interest among the very rich in America？
A.The fate of the ultrawealthy people.
B.The disintegration of the middle class.
C.The inequality in the distribution of wealth.
D.The conflict between the left and the right wing.
B.Go to the theatre.
C.Pick up George and Martha.
D.Take her daughter to hospital.
B.He sacrificed his life to save a baby girl.
C.He was killed instantly in a burning ear.
D.He got married to Karens mother.
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