单项选择题

From paragraph 4 we can infer that ______.

A．the increasing concentration is certain to hurt consumers
B．WorldCom serves as a good example of both benefits and costs
C．the costs of the globalization process are enormous
D．the Standard Oil Trust might have threatened competition

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单项选择题

According to the interview, Sara’s grades have fallen probably because ______.

A．She was tired of the study at school.
B．She didn’t get enough to eat.
C．She helped too much with the chores.
D．She always slept in the class.

单项选择题

The ultimate purpose of the interview is to _______.

A．make the parents be aware of the importance of equality in the family.
B．make people know that girls and boys should be treated differently.
C．find good solutions about how to study well in the school.
D．find good solutions about how to solve a family quarrel.