单项选择题

The primary aim of some companies' sponsoring the search engines is to______.

A．cash in on their important role as Web guides
B．boost their avenue
C．reverse a series of losses
D．have their sites visited by the Internet users more

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单项选择题

The second paragraph mainly tells us that______.

A．parents should be strict with their children
B．parental controls reflect only the needs of the parents and the values of the community
C．parental restrictions vary, and are not always enforced for the benefit of the children alone
D．parents vary in their strictness towards their children according to the situation

单项选择题

When people become unemployed, it is______ which is often worse than lack of wages.

A．laziness
B．poverty
C．idleness
D．inability