单项选择题

Questions 19 to 22 are based on the conversation you have just heard.

What may customers find surprising about Harold’s（）

A．Its power bill reaches ￡ 9 million a year.
B．It sells thousands of light bulbs a day.
C．It supplies power to a nearby town.
D．It generates 70 % of the electricity it uses.

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单项选择题
In what way are waterscooters said to be an environmental nuisance（）

A．They scare whales to death.
B．They produce too much noise.
C．They discharge toxic emissions.
D．They endanger lots of water life.
单项选择题
Why are many Americans concerned with the increasing dropout rate in school（）

A．It may produce an increasing number of idle youngsters.
B．It may affect the quality of higher education in America.
C．It may cause many schools to go out of operation.
D．It may lead to a lack of properly educated workers.
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