问题 填空题

一部科幻电影中有这样的场面:一艘飞船在太空中遇险,另一艘飞船前去营救的途中,突然听到了遇险飞船的巨大爆炸声,然后看到了爆炸的火光。请你给导演指出这个场景中的科学性的错误:(1)                                  ;(2)                                          。

答案

(1)先听到爆炸声,后看到爆炸的火光(光速远大于声速);(2)听到爆炸声(真空不能传声) 

不符合;这个情景中的一个科学性错误是:被导弹击中的飞船先响起巨大的爆炸声,接着才看到爆炸产生的火.

太空中,一艘飞船向另一艘飞船发射导弹,被导弹击中的飞船响起的巨大的爆炸声与爆炸产生的火光同时发出,由于光在空气中的传播速度远大于声音在空气中的传播速度,所以我们应该先看到爆炸产生的火光,后听到响起巨大的爆炸声.

因为太空没有空气,是真空,真空不能传播声音,因而不能听到声音;

所以此影片中的情境是不符合科学道理的.

填空题


A
PASSAGE 1:
According to US Trade Representative Robert B. Zoellick, the ambitious US proposal for worldwide zero tariffs is comprehensive, and would benefit both developed and developing nations.
The proposal, said Zoellick, when combined with the far-reaching US agricultural reform proposal submitted to the WTO in July, would eliminate tariffs on the nearly $6 trillion in annual world goods trade, lifting the economic fortunes of workers, families, businesses, and consumers.
"Our proposal would turn every corner store in America into a duty-free shop for working families," said Zoellick. "This historic proposal would benefit the average American family with an extra $1,600 a year, while also removing high foreign tariff barriers on more than $670 billion in US industrial and consumer goods exports. Globally, tariff-free trade could help lift millions of people in developing countries out of poverty."
"President Bush believes that American workers, farmers, ranchers and businesses must have more than just the ability to compete globally, they must also have the opportunity to do so," said US Commerce Secretary Don Evans. "This proposal says that ’no one wins unless we all win’ and ensures a level playing field for America’s goods and ingenuity to compete fairly around the world."
B
PASSAGE 2:
The US proposal envisions a two-step approach to eliminating tariffs on a full-range of consumer and industrial goods ranging from women’s shoes, to tractors, to children’s toys.
First, WTO members would be required to cut and harmonize their tariffs in the five year period from 2005 to 2010. Specifically, WTO members would eliminate all tariffs at or below 5 percent by 2010, cut all other tariffs through a "tariff equalizer" formula to less than 8 percent by 2010, and eliminate tariffs in certain highly traded industry sectors as soon as possible, but not later than 2010.
Next, all WTO members would make equal annual cuts in remaining tariffs between 2010 and 2015. These cuts would result in zero tariffs.
The proposal also calls for a separate program to identify and eliminate non-tariff barriers, which would run on a parallel track with the negotiations on industrial tariffs. The US will put forward an initial list of such barriers in January of 2003.
C
PASSAGE 3:
According to the Office of US Trade Representative (USTR), eliminating US tariffs would significantly benefit US families and consumers through lower import taxes and a more competitive economy. Hidden import taxes cost American consumers $18 billion in 2001, alone. USTR contends that duty-free trade would eliminate these hidden costs and lower prices for consumers. While this proposal would offer substantial benefits to all Americans, it would particularly help low-income families. A recent study by the Progressive Policy Institute found that cutting US import taxes especially benefits single-parent, low-income families, who typically pay a higher proportion of their income on import taxes than other households. A study done by the University of Michigan found that the US economy would expand by $95 billion as a result of tariff-free trade--contributing to job-creation and higher wages. The University of Michigan study also revealed: The elimination of industrial tariffs by other countries could increase US exports by $83 billion annually highly-traded goods exports, such as chemicals, paper, and scientific equipment, which are targeted in the US proposal for total tariff elimination, account for 60 percent of all US exports.
Estimates by the World Bank project that tariff-free global trade would result in a worldwide income gain of $832 billion from trade in all goods including agriculture, of which $539 billion (65 percent) would flow to developing countries. Representing an income increase of about $544 for a family of four, the World Bank estimates that free trade in goods and services could help lift 300 million people out of poverty-- a number greater than the entire population of the United States.
D
PASSAGE 4:
The reduction and elimination of tariffs on consumer and industrial goods is a component of the WTO negotiations launched in Doha, Qatar in 2001 to be completed by January 1, 2005.
Throughout the year, United States leadership has continued to spur momentum on the Doha Development Agenda in the WTO:
·On July 1, the United States announced proposals for liberalizing global trade in services, designed to remove foreign barriers in areas such as financial services, telecommunications, and environmental services.
·On August 9, the United States submitted a proposal to expand transparency and public access to World Trade Organization dispute settlement proceedings. The proposal would open WTO dispute settlement proceedings to the public for the first time and give greater public access to briefs and panel reports.
·On October 17, the United States submitted a paper highlighting the importance of strengthening transparency and due process in the application of trade remedies (antidumping, subsidies, and safeguard actions). It addresses the basic concepts and principles of the trade remedy rules against unfair trade, and the importance of tackling the trade-distorting practices that are frequently the root causes of unfair trade. The US also submitted a paper presenting a number of ideas and recommendations for addressing trade- and market-distorting practices in the steel sector.
·the US will propose tariff-cutting in two phases71. ______
·how a duty-free world would help US consumers 72. ______
·the proposal could averagely save a US family $1,600 a year73. ______
·the US will submit an initial list of non-tariff barriers 74. ______
·the procedure of the tariff-free proposal arranged through the whole year 75. ______
·tariff-free world trade could help lift millions of people out of 76. ______
poverty in the world 77. ______
·the US put forward a paper about reasons of unfair trade78. ______
·the US has called on the WTO to eliminate all tariffs on consumer 79. ______
and industrial goods worldwide80. ______

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