impossible（）
A. can
B. able
C. not possible
D. possibility
Which of the following describe of endogeneity is not true（）
A. From macro perspective, endogeneity represents issue generated within the system
B. Potential reasons for endogeneity issue can be measurement error, explanatory variable omitted and simultaneity
C. From micro perspective, endogeneity describes correlation between one or more explanatory variables and error term in the model
D. Endogeneity will not destroy the uniformity parameter estimates
Which of the followings can lead to a larger diversity（）
A. higher disparity
B. lower disparity
C. less balanced distribution
D. less variety
What do we usually talk about to start a conversation（）
A. Commenting on impersonal topics, such as the weather
B. Commenting on the activity we are participating in, such as the party
C. Interrupting at the right point into the conversation we are having
D. Asking about marital status
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