Which of the following statements is TRUE according to this passage?
A.The achievements of stage four are based on the ones of the previous three stages.
B.Symboling is the characteristic of each of the four stages of development.
C.The two aspects of the evolution of minding are symboling and articulate speech.
D.The factor of referring meanings of things involved is significant in all the four stages of development.
第3题
关于远期汇率决定和变动的汇率学说是()。
A.汇兑心理说
B.利率平价说
C.资产市场说
D.国际借贷说
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