The authors attitude towards the possibility of closing the gap in Washington is one of______.
A．pessimism
B．optimism
C．skepticism
D．objectiveness

单项选择题按照国际电信联盟（ITU）对媒体的定义，图像编码属于（）。

A.存储媒体
B.显示媒体
C.感觉媒体
D.表示媒体

未分类题The income disparity Washington D.C. confronts is not characterized by______.A．severityB．resilienceC．persistenceD．arduousness

未分类题Which of the following is true in the case of David Garrison ?A．He holds a guarded prospect of bridging the income gap in a short period.B．Current economic progress and recovery will be able to help out the poor.C．He argues that this income disparity originates from multiple factors.D．Rich families tend to move into the greater Washington metro area.

未分类题The author suggests that the most valuable resource in todays society is______.A．technologyB．economic assetsC．access to informationD．time

未分类题According to the imaginary history simulated in the game, 9 11 may be prevented if______.A．former government officials paid more attention on the alarm of Al QaedaB．the leaders of Al Qaeda were captured in covert operationsC．the Bush Administration raised national defense expenditureD．the U.S. well dealt with the popular fury of the Muslim world