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【单选题】
总指数编制的两种基本形式是A.
个体指数和综合指数
B.
综合指数和平均指数
C.
算术平均指数和调和平均指数
D.
固定构成指数和结构影响指数
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举一反三
【单选题】— Are you going to the party? — No, because I _____. [ ]
A.
have asked
B.
haven't asked
C.
have been asked
D.
haven't been asked
【简答题】Have you been asked for money by some disabled beggars while you’re enjoying shopping? Do you have any pity on them who are so poor and lonely or do you just feel afraid of their terrible shapes? As o...
【单选题】— Where are Jack and Mike? — They ____ the furniture you asked for into thehouse. [ ]
A.
have been carrying
B.
carried
C.
have been carried
D.
were carried
【简答题】用既定曲面去剪裁其他曲面叫做()。
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