单项选择题

It can be inferred from the passage that the shell should be ______.

A．fancy-looking
B．waterproof
C．easily breakable
D．extremely strong
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单项选择题
The main function of the shell is ______.
A．to strengthen the pilings of the house
B．to give the house a better appearance
C．to protect the wooden frame of the house
D．to slow down the speed of the swelling water
单项选择题
Alter the tragedy mused by Hurricane Hugo, new houses built along South Carolina's shore line are required ______.
A．to be easily reinforced
B．to look smarter in design
C．to meet stricter building standards
D．to be designed in the shape of cubes
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