单项选择题

It has been estimated that the earth's surface temperature has increased ______ one quarter to three quarters of a degree since 1850. ~

A．to
B．by
C．at
D．with
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单项选择题
The incident ______ the manager to call a meeting of the staff.
A．imposed
B．enlightened
C．persuaded
D．prompted
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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