单项选择题

Which of the following examples BEST reflects a cost to society as defined in the passage

A．A family buying a dog.
B．Eating in a restaurant instead of at home.
C．Using land for a house instead of a park.
D．Staying at home instead of going to school.

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单项选择题

According to the passage, what is the relationship between production and resources

A．Available resources stimulate production.
B．Resources are totally independent of production.
C．Production increases as resources increase.
D．Production lessens the amount of available resources.

单项选择题

Don Cameron's company______.

A．is the only one of its kind in Britain
B．made the first balloon in Europe
C．has made most of the balloons in Britain
D．is now the largest in the world