单项选择题

Soap operas have helped in lowering Brazil's birth rate because ______.

A．they keep people sitting long hours watching TV
B．they have gradually changed people's way of life
C．people are drawn to their attractive package
D．they popularize birth control measures
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单项选择题
According to the passage, many Third World countries ______.
A．haven't attached much importance to birth control
B．would soon join Brazil in controlling their birth rate
C．haven't yet found an effective measure to control their population
D．neglected the role of TV plays in family planning
单项选择题
The concept of personal choice concerning health is important because ______.
A．personal health choices help cure most illnesses
B．it helps raise the level of our medical knowledge
C．it is essential to personal freedom in American society
D．wrong decisions could lead to poor health
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