单项选择题

A．There were fatal mistakes in its design.
B．The builder didn’t observe the building codes of the time.
C．The traffic load went beyond its capacity.
D．It was built according to less strict earthquake-resistance standards.
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单项选择题
A．It is a city of contrasts.B．It possesses many historical sites.C．It is an important industrial center.D．It has many big and beautiful parks.
A．It is a city of contrasts.
B．It possesses many historical sites.
C．It is an important industrial center.
D．It has many big and beautiful parks.
填空题
weighing改为weigh。
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