单项选择题

All products have to pass strict inspection ( )they go out.

A．after
B．since
C．as
D．before
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单项选择题
汉译英：“动物品种；优惠待遇；保留条款”，正确的翻译为：( )。
A．breed of animal; preferential treatment; reservation clause
B．species of animal; preferential treatment; payment terms
C．breed of animal; favor treatment; payment terms
D．species of animal; favor treatment; reservation clause
单项选择题
( ) is a major port of Brazil.
A．Portland
B．Rabat
C．Rio de Janeiro
D．Rouen
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