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【单选题】
经济模型和计量模型的主要区别A.
分析数据的方法不同
B.
统计数据的口径不同
C.
随机误差项
D.
复杂程度
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】杜邦财务分析体系利用了各财务指标间的内在关系对企业综合经营理财及经济效益进行系统分析评价，该体系中的龙头指标为( )。
A.
权益净利率
B.
资产净利率
C.
销售净利率
D.
权益乘数
【单选题】This is my old photo of my aunt’s when she had _____. And now she has a few _____.
A.
short hair; grey hairs
B.
short hairs; grey hair
C.
short hair; grey hair
D.
short hairs; grey hairs
【单选题】My mother had to visit our aunt at the hospital and insisted that we ______ bread for dinner.
A.
eat
B.
ate
C.
would eat
D.
must eat
【单选题】–A nice tie! A present? --Yes, it is. My aunt ______it to me for my last birthday.
A.
was sending
B.
had sent
C.
will send
D.
sent
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