2011考研英语二真题及答案解析.pdf

2011考研英语二真题及答案解析--第1页 2011 年硕士研究生入学考试2011 英语二 真题及参考答案 Section I Use of English Directions ： Read the following text. Choose the best word （s ） for each numbered black and mark A, B ， C or D on ANSWER SHEET 1 。 （10 points） The Internet affords anonymity to its users, a blessing to privacy and freedom of speech 。But that very anonymity is also behind the explosion of cyber—crime that has 1 across the Web 。 Can privacy be preserved 2 bringing safety and security to a world that seems increasingly 3 ？ Last month, Howard Schmidt ， the nation ’s cyber-czar, offered the federal government 4 to make the Web safer place— “voluntary trusted identity” system that would be the high-tech 5 of a physical key, a fingerprint and a photo ID card, all rolled 6 one. The system might use a smart identity card ， or a digital credential 7 to specific computer .and would authenticate users at a range of online services 。 The idea is to 8 a federation of private online identity systems 。 User could 9 which system to join, and only registered users whose identities have been authenticated could navigate those systems 。 The approach contrasts with one that would require an Internet driver ’s license 10 by the government. Google and Microsoft are among companies that already have these “single sign-on systems that make it possible for users to 11 just once but use many different services 。 12 .the approach would create “walled garden” n cyberspace, with safe “neighborhoods” and bright “streetlights to establish a sense of 13 community. Mr. Schmidt described it as “voluntary ecosystem in which “individuals and organizations can complete online transactions with 14 ,trusting the