单项选择题

Ryan was late for the conference yesterday （） the traffic jam.

A．because
B．since
C．for
D．because of
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单项选择题
In my bedroom, there is a pair of scissors, a stack of books and （） flowers on my desk.
A．a piece of
B．a pocket of
C．a slice of
D．a bunch of
单项选择题
The boy is eager to （） knowledge in different fields.
A．accomplish
B．absorb
C．arrange
D．approach
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