It is indicated in the first two paragraphs that US mail delivery______.
A. has been charged at a low price
B. has been processed rather tardily
C. has often failed to be delivered successfully
D. has been handled by too many local facilities
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According to Paragraph 5, social norms will grow______.
A. diversified
B. disrupted
C. balanced
D. polarized
It can be inferred from the text that ad-men in 1960s are more happy than office workers today mainly because______.
A. they are free to enjoy simple and spontaneous fun
B. they are empowered to make individual decisions
C. they are not forced to boost creavitivity and productivity
D. they can take a relief to poke fun at their boss
To which of the following statement would Ariely agree？
A bit of deception invites no harm
B. We are unlikely to be truly honest
C. We are driven by economic models
D. People tend to cling to moral codes
It can lie inferred from Paragraph 4 that______.
A. growth of population once accelerated economic development
B. important inventions contributed little to 20th century growth
C. debt accumulation has lost its power to promote economic growth
D. economic growth will depend less on resource consumption
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