单选题
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
【正确答案】
D
【答案解析】
这个推理题的关键在于理解第二段的第一句和最后两句。由此，应选[D]为好。
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