2. 外语
  3. A、A hypothesis is described, challenged by a second hypothesis, then disproved by research. B、A hypothesis is described, then co

A、A hypothesis is described, challenged by a second hypothesis, then disproved by research. B、A hypothesis is described, then co

admin2009-05-19  50
问题
选项 A、A hypothesis is described, challenged by a second hypothesis, then disproved by research.
B、A hypothesis is described, then confirmed by research, disproving a second hypothesis.
C、A hypothesis is described, then established by research, then replaced by a second hypothesis.
D、A hypothesis is described, then modified through research, then compared with a second hypothesis.
E、A hypothesis is described, then abandoned after research, and replaced with a second hypothesis.
答案A
解析
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