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【单选题】
将12个球放入3个盒子里，使每个盒子里球的数目是偶数，且没有空盒，问共有几种放法?（ ）A.
10
B.
12
C.
8
D.
6
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A.
They had been financing the United National Party.
B.
They had been fighting the Tamil Tiger rebels and the United National Party.
C.
They had been financing the Tamil Tiger rebels and the opposition United National Party.
D.
They had been financing a military regime.
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A.
have been, became
B.
had been, become
C.
had been, became
D.
has been, become
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A.
He had been there
B.
There he had been
C.
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D.
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had been dying
B.
had died
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had been dead
D.
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A.
has been in
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had been in
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had gone to
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A.
a refund of $.30 from the clerk
B.
a consumer surplus amounting to$.30.
C.
excess marginal benefit of $2.19.
D.
producer surplus of $.30.
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