2. 外语
  3. Scientists’ hypotheses are guesses which are already supported by a certain amount of evidence, derived from actual observation

Scientists’ hypotheses are guesses which are already supported by a certain amount of evidence, derived from actual observation

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问题 Scientists’ hypotheses are guesses which are already supported by a certain amount of evidence, derived from actual observation and experiment.
选项 A、theoretical
B、psychological
C、empirical
D、emotional
答案C
解析 形容词辨义。这四个选项的词性都是形容词，其中theoretical表示“理论上的；推想的；假设的”，psychological是指“心理的；心理学上的”，empirical表示“以经验为根据的，经验主义的”，emotional表示“易动感情的；容易激动的”，如：She was very emotional；she cried even when her husband left for another city on business．(她很易动感情，她丈夫到另一个城市出差时她竟然放声大哭。)根据句意，通过观察和实验得出的应该是经验式的证据，应该选择C)。
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