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【简答题】
已知x-y=3，求3x 2 -6xy+3y 2 的值．
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举一反三
【单选题】The reason why the car was stopped was () .
A.
that the road was slippery
B.
due to the slippery road
C.
because the road was slippery
D.
because of the slippery road
【简答题】A．The customer was very rude but the waitress was not. B．The waitress was very rude but the customer was not. C．The waitress shouted at the customer. D．The customer and the waitress had a quarrel.
【单选题】Why was the Stuyvesant a limited success?
A.
The arrangement of the rooms was not convenient.
B.
Most people could not afford to live there.
C.
There were no shopping areas nearby.
D.
It was in a crowded neighborhood.
【单选题】The minister headed the committee.
A.
was on the verge of
B.
was on the basis of
C.
was at the cost of
D.
was in charge of
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