单项选择题

We derive knowledge mainly from books.

A．deprive
B．obtain
C．descend
D．trace
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单项选择题
She wore a gorgeous Victorian gown which was said to be worth thousands of dollars.
A．beauty
B．splendid
C．expensive
D．simple
单项选择题
He is assigned to oversee the production of the assembly lines.
A．supervise
B．watch
C．suspect
D．predict
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