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【单选题】
短期平均成本曲线成为U形的原因与A.
规模报酬有关;
B.
外部经济与不经济有关;
C.
要素的边际报酬变动有关;
D.
固定成本与可变成本所占比重有关
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举一反三
【单选题】Margaret Thatcher has the nickname "the Iron Lady".
A.
new name
B.
actual name
C.
descriptive name
D.
similar name
【单选题】One reason that women tend to have more children is that ______.
A.
raising a child is very valuable so far as her time is concerned
B.
more children can reduce the cost of raising them
C.
the cost for caring for a child is worthwhile
D.
the care for a child does not cost her much
【单选题】______ was nicknamed the “Iron Lady” by the Soviets.
A.
Princess Diana
B.
Margaret Thatcher
C.
Mother Teresa
D.
Queen Elizabeth II
【简答题】The iron lady 二 Blank fillng 1.
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