单项选择题

It was from the earliest time ______ men began to study the natural phenomena and heavenly bodies.

A．when
B．where
C．that
D．how
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单项选择题
This book ______ me twenty dollars.
A．is cost
B．was cost
C．cost
D．have been cost
单项选择题
______ her previous refusal, the smell of the hot buttered toast was appealing.
A．In spite
B．Besides
C．Except for
D．Despite
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