单项选择题

A．It can increase production by 4.5 percent in factories at least.
B．It is sometimes very boring to the workers.
C．It can possibly give people better feeling and influence their attitudes.
D．It is always faster than any other music.
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单项选择题
A．It was the largest city of Alaska.B．It was a city of 40,000 people.C．There were a lot of wild animals around it.D．There was no sign of human presence around it.
A．It was the largest city of Alaska.
B．It was a city of 40,000 people.
C．There were a lot of wild animals around it.
D．There was no sign of human presence around it.
单项选择题
A．Homeshcooling can provide more time for the families to get together.B．Homeschooling solves the problem of congestion (用挤) in one class.C．Homeschooling has a lot of organizations to provide teaching materials.D．Parents have their own religious beliefs.
A．Homeshcooling can provide more time for the families to get together.
B．Homeschooling solves the problem of congestion (用挤) in one class.
C．Homeschooling has a lot of organizations to provide teaching materials.
D．Parents have their own religious beliefs.
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