单项选择题

A．It started at a time when the workers were slower in work.
B．it started during the Second World War.
C．It started before the factories had their own orchestras.
D．It started in the early part of 19th Century.
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单项选择题
A．More and more people moved in this city.B．Oil was found in this area.C．There are more and more forests outside the city.D．The housing and transportation are improved greatly.
A．More and more people moved in this city.
B．Oil was found in this area.
C．There are more and more forests outside the city.
D．The housing and transportation are improved greatly.
填空题
improve
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