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【多选题】
绿色壁垒的表现形式包括( )。A.
绿色关税和市场准入
B.
绿色技术标准，绿色补贴
C.
绿色环境标志，绿色卫生检疫制度
D.
绿色包装和标签制度
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【单选题】Whenever we (hear of) a natural disaster, (even) in a distant part of the world, we feel (sympathy) for the people (having affected).
A.
hear of
B.
even
C.
sympathy
D.
having affected
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【单选题】Whenever an earthquake happens, we should offer ________ help we could, to those victims. [ ]
A.
however
B.
whenever
C.
whatever
D.
whichever
【单选题】Whenever a natural disaster happens, we should offer ____ help we could to those victims.
A.
however
B.
whatever
C.
whenever
D.
whichever
【单选题】Whenever we hear of a natural disaster, we feel sympathetic to the people to be affected.
A.
to have affected
B.
to have effected
C.
who have been effected
D.
who have been affected
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