[单项选择]The decline of bus ridership in the U.S. is caused by ______.


A. the rise of bus fares
B. the increased number of private cars
C. the improvement of the commuter railroad service
D. the poor condition of the transportation infrastructure

[单项选择]The decline of bus ridership in the U.S. is caused by ______.


A. the rise of bus fares
B. the increased number of private cars
C. the improvement of the commuter railroad service
D. the poor condition of the transportation infrastructure

[单项选择]The moral decline of American society is caused mainly by ________.
A. its growing wealth
B. the self-centeredness of individuals
C. underestimating the impact of social changes
D. the prejudice against women and minorities

[单项选择]What caused the decline of Mercedes' sales in Japan

[单项选择]The economy continued to exhibit signs of decline in September.
A. play
B. send
C. show
D. tell

[单项选择]The passage suggests that the spiraling decline of black neighborhoods can be blamed primarily upon
A. (A) a lack of political will within underprivileged communities to counter the economic effects of segregation
B. (B) the diminished significance of urban black neighborhoods as economic and residential centers relatively to other areas of the city
C. (C) the tendency of poor blacks to live among other poor minorities, unlike poor whites, who live dispersed among rich whites
D. (D) the uniqueness of the geographic pattern in which black communities have developed in America, relative to other communities
E. (E) a lack of resources within the urban black American communities to resist the forces which lead to segregation

[单项选择]What caused the deposits


A. The hydrochloric acid broke the carbon bonds in tile carbon dioxide,
B. The magnesium oxide broke the carbon oxygen bonds in the carbon dioxide.
C. The burning magnesium broke the carbon oxygen bonds in the carbon dioxide.
D. The gas collection method broke the carbon-oxygen bonds in the carbon dioxid

[单项选择]According to Einstein, the current moral decline may be reversed ______.


A. if people can return to the" golden age"
B. when women and mean enjoy equal rights
C. when people rid themselves of prejudice
D. if less emphasis is laid on material things

[单项选择]To compensate for the substantial decline in the availability of fossil fuels in future years, we will have to provide at least an ______ alternative energy source.
A. anticipated
B. official
C. equivalent
D. emotional

[单项选择]According to Elshtain, the current moral decline may be reversed ______.
A. if people can return to the "golden age"
B. when women and men enjoy equal rights
C. when people rid themselves of prejudice
D. if less emphasis is laid on material things