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【单选题】
人们常说的“多多益善”,从经济学角度来说,是指随着所消费的商品数 量增多, ( )。A.
总效用递增
B.
边际效用递增
C.
c.总效用递减
D.
边际效用递减
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【单选题】Not only ______ us light, but it gives us heat.
A.
the sun gives
B.
the sun has given
C.
has the sun given
D.
does the sun give
【简答题】It is stated in astrology that ________. [A] the sun is so distant from us that it was hard to follow its motion [B] the sun was moving westward around the sky [C] the motion of the sun is at the rate...
【单选题】The teacher said to us yesterday," The earth travels around the sun."
A.
The teacher said to us yesterday the earth travelled around the sun.
B.
The teacher told us yesterday the earth travelled around the sun.
C.
The teacher told us yesterday the earth travels around the sun.
D.
The teacher asked us yesterday the earth travelled around the sun.
【单选题】It is stated in astrology that ______.
A.
the sun is so distant from us that it was hard to follow its motion
B.
the sun was moving westward around the sky
C.
the motion of the sun is at the rate of about thirty degrees every week
D.
the motion of the sun is similar to the revolution of the earth around the sun
【单选题】烹饪是人类为了满足生理和心理需要把可食原料用适当方法加工成为食用成品的活动,其成品以能提供______ 为基本要求。
A.
营养、卫生、美感
B.
色、香、味
C.
口感、营养、美感
D.
色、味、型
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