单项选择题

According to the passage some guests may be invited because ______.

A．they are likely to be annoyed if they are not
B．they may give valuable presents
C．their presence could provide future benefits
D．they may help with the expenses of the wedding

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单项选择题

According to the passage, what difficulty did the social and behavioral sciences confront in the 1970's

A．The social and behavioral sciences lost out in the race for federal science funds.
B．Governments are more than alarmed about a variety of social problem.
C．Nearly half of all urban dwelling American males can expect to be arrested for some non-traffic offense during their lives.
D．Most criminals halt their careers by age 25 to 30.

单项选择题

In the last sentence of the passage, the word confinement is closest in meaning to the word ______ .

A．funds
B．solution
C．research
D．imprisonment