单项选择题

This passage is concerned primarily with the ______.

A．problems of waste disposal
B．dangers of drinking from wells
C．turbidity of polluted water
D．outbreak of cholera
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单项选择题
After the theft of his car he put in an insurance ______ for $4500.
A．invoice
B．account
C．claim
D．assessment
单项选择题
Mr. White holds a very important post with the company, but he is never ______ about what he eats and wears.
A．peculiar
B．particular
C．specific
D．special
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