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【多选题】
计量经济学中的基本数据类型有()A.
时间序列数据
B.
横截面数据
C.
面板数据
D.
属性数据
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【单选题】Based on the passage, it seems that the purpose of the cafe is to______.
A.
learn a skill
B.
help a youth project
C.
do business
D.
earn school credit
【多选题】如果( )成立,则事件A与B独立.
A.
P(AB)=P(A)P(B)
B.
P(A+B)=P(A)+P(B)
C.
P(A|B)=P(A)(P(B) 0)
D.
P(B)=1- P(A)
【单选题】Paul said, "Go get some milk." What did Paul mean?
A.
He thinks Frankie is thirsty.
B.
Paul is thirsty.
C.
He wants Frankie to bring the milk.
【单选题】The main purpose of this passage is ______.
A.
to prove that man is a descendent from some higher animal
B.
to satirize human greediness
C.
to prove that man is superior to other animals
D.
to criticize man as a maniac
【单选题】What is the purpose of the National Institute of Child Health and Human Development?
A.
To help all the weak children and women.
B.
To study the genes of babies and mothers.
C.
To find out what affects healthy development in people.
D.
To study why babies are influenced by their environment.
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