单项选择题

A．People could do everything themselves.
B．Few people chose to be a professional worker.
C．People with no professional training successfully built their own houses.
D．New expensive materials required no skills at all.
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单项选择题
A．The number of people who are over 100 years old is on the rise.B．There are more than 20,000 Americans who are over 100 years.C．Animal’s period of growth last about twenty-five years.D．Most doctors hold that people cannot live beyond 150 years.
A．The number of people who are over 100 years old is on the rise.
B．There are more than 20,000 Americans who are over 100 years.
C．Animal’s period of growth last about twenty-five years.
D．Most doctors hold that people cannot live beyond 150 years.
单项选择题
A．It is the biggest leisure industry.B．Movies, TV shows, concerts and books are usually intended for our leisure.C．People are usually reluctant to pay to watch professional sports.D．Making TV sets and building theatres are also part of entertainment industry.
A．It is the biggest leisure industry.
B．Movies, TV shows, concerts and books are usually intended for our leisure.
C．People are usually reluctant to pay to watch professional sports.
D．Making TV sets and building theatres are also part of entertainment industry.
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