knockoff=n.an unauthorized copy or imitation

______ access to the computer system should be prevented. A: Unequal B: Unfortunate C: Uniform D: Unauthorized

A( )is a computer system or program that automatically prevents an unauthorized person from gaining access to a computer when it is connected to a network such as the Internet. A: firewall B: gateway C: router D: anti-virus software

A copyright protects authors and creators against______reproduction or use of writings and other original works of authorship for the life of the author plus 50 years. A: undermined B: unduplicated C: unexpired D: unauthorized

Which of the following is NOT a problem that will arise in Internet voting A: People will gain unauthorized access to a database. B: Online voting system may be distorted. C: Participants will be mainly wealthy and cyber-connected people. D: Computer failure.

Because of the moral hazard problem, A: lenders may demand positions on the board of directors of the firms that they provide with financing B: lenders will choose to write complicated contracts, prohibiting the borrowers from using the loan proceeds for unauthorized purposes C: lenders will more readily lend to borrowers with high net worth D: all of the above

在英文的语境中，非法移民的词组主要涉及（ ）unwanted migrant （不想要的移民）等，西方学者使用不同词汇的现象从一定程度上反映了此种类型移民本身具有的复杂性。我们先姑且统一称为非法移民。 A: egular migrant （ migration）（非正规移民） B: undocumented migration（无文件移民） C: illegal（unlawful） migrant（非法移民） D: unauthorized mogrant（未授权的移民）