二战后，发达国家与发展中国家间的国际分工处于国际分工格局的主导地位。( )
参考答案：错
Generally speaking, a small family in big cities in China _____ parents and a child. [ ]
A. makes up of
B. is consisted of
C. consists of
D. is made up
An analyst does research about correlation. In a portfolio of two risky securities, the portfolio risk is maximized when the two securities are.（）
A. uncorrelated.
B. perfectly positively correlated.
C. perfectly negatively correlated.
