[简答题]In fact, one of the biggest virtues of virtual reality is that it allows students to learn in a safe environment, and this holds true for students with behavior disorders. After a student has learned an appropriate behavior or way of controlling his or her anger, the student is put in progressively more difficult virtual social situations where he or she can practice the new technique. And it is expected that future teachers will be exposed to virtual classes, complete with "difficult students" to help them master behavior management techniques.
Virtual reality even allows us to tailor the world to meet a child’s needs. Let’s say we’re teaching a child to cross the street by paying attention to traffic signs. Educators have found that it is often difficult for the child to locate the traffic sign in a busy environment. With virtual reality, we can blow up the "walk sign" so the student knows what it looks like. Then we gradually begin shrinking the sign and adding other environmen

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[简答题]In fact, cities outside the Arab world did not reach the same level of social development until centuries later. (Passage Four)

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[单项选择]What is one fact we do not learn from the final commentary of the video
A. People who can record the next eclipse.
B. The date of an upcoming solar eclipse.
C. How to record an eclipse for your posterity.
D. Where the next Christmas eclipse will occur.

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{{B}}Passage One{{/B}}

A study of facts and figures on development demonstrates that China has made remarkable social progress in a range of significant areas in the last 45 years.
China feeds and clothes 22 percent of the world’s population with only seven percent of the world’s farmland. The necessities of life food, clothing, goods for everyday use — are now within reach of the majority of the Chinese people. Nutrition has improved greatly for both urban and rural residents.
The Chinese government has taken a series of measures to eliminate or reduce poverty, bringing down the number of poor in the rural population from 250 million in 1978 to only 80 million in 1994, even though this was a period in which China’s population increased by over 100 million.
The per capita living area in cities and towns increased from 3.6 squar
A. Fast Economic Development in China.
B. Social Development in China.
C. The Current Chinese Society.
D. People’s View on China’s Reform.

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[单项选择]A virtual memory system has five virtual pages numbered zero through four and three page frames. All the page frames are initially empty. How many page faults are generated with the following access sequence using a FIFO replacement policy ( ) 0 1 2 3 0 1 4 0 1 2 3 4
A. 8
B. 9
C. 10
D. 7

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[单项选择]Pokie machines are addictive for the following reasons EXCEPT that_________.
A. they seem to be fun to beginners
B. they allow big wins
C. they are easy to play
D. big wins seem possible given enough time and money

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Vodafone Enters UK iPhone Market

Vodafone has reached an agreement to sell Apple’s popular iPhone in the UK.
The announcement follows news that network operator Orange had secured a similar agreement with Apple. The deals mark an end to the exclusive UK arrangement between O2 and the US technology firm, which has been in place since 2007.
Vodafone says users can register an interest online, with the handsets becoming available to customers from early 2010. Orange said its customers would be able to buy the phone" later this year" but did not specify a date or pricing.
Vodafone is one of the biggest mobile operators in the world with an estimated 300 million customers world wide, making it the second largest carrier after China Mobile. The agreement sees both Orange and Vodafone selling both the iPhone 3G and iPhone 3GS.
A spokesperson for Vodafone said the firm was" delighted" at securing an agreement with Apple and th
A. To sell iPhone in the US.
B. To sell MacBook in the UK.
C. iPhone is available exclusively to Vodafone in the UK.
D. To sell iPhone in the UK

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