单项选择题

The representative samples were (　) at random.

A．being drawn
B．Drawing
C．Drawing
D．Draw
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单项选择题
The goods were packed ( ) plywood cases,with gunnies covering the outside.
A．About
B．On
C．In
D．Up
单项选择题
The goods were pucked ( ) plywood cases,with gunnies covering the outside.
A．About
B．On
C．In
D．Up
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