单项选择题

According to the passage, it is inferred that the evolution of living things may be characterized by ______.

A．its being a cumulative process
B．its control over the external world
C．the lasting limitations imposed upon them
D．its contribution the the safe survivability of life
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单项选择题
In the second stage of the evolution of mind,______.
A．the response of the organism is determined by the intrinsic properties of the things in question
B．the reactions of the organism are free from the intrinsic properties of things
C．the organism distinguishes between things involved at a distance
D．the organism can merely react to an intermediate stimulus
单项选择题
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.
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