单项选择题

Questions 19 to 21 are based on the conversation you have just heard.

A．To improve his skating techniques.
B．To take a vacation.
C．To take a course.
D．To learn to ski.
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单项选择题
According to the author, which of the following is TRUE about the situation in 20 or 25 years
A．There will be stricter laws and regulations on employment.
B．There will be fewer people who take full-time jobs.
C．There will be more older employees.
D．There will be more people who work at home and far from each other.
单项选择题
What is very important in the long-distance training of dogs
A．To urge dogs run for g 000 to 3 000 miles every day.
B．To train the dogs for at least one year.
C．To train the dogs to pull vehicles on dry land.
D．To get the dogs accustomed to running long distances.
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