单项选择题

The walls are made of hollow concret blocks.
　　

A．big

B．empty

C．long

D．new

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单项选择题
The storm caused severe damage.
A．physical

B．accidental

C．serious

D．enviromental
单项选择题
All the walls in the building had the same layout.
A．size

B．function

C．color

D．arrangment
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