2. 外语
  3. Many important discoveries relating to the ______ of electricity were made in the 18th century.

Many important discoveries relating to the ______ of electricity were made in the 18th century.

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问题 Many important discoveries relating to the ______ of electricity were made in the 18th century.
选项 A、appearances
B、surroundings
C、occurrences
D、phenomena
答案D
解析 名词辨义。appearance意为“出现，外观”，如：His sudden appearance surprised her．(他的突然到来使她很惊讶。)surrounding(pl．)意为“周围的事物，环境”，如：social surroundings(社会环境) occurrence意为“发生，事件”，如：an everyday occurrence(每天发生的事)；phenomenon意为“现象”，如：the phenomena of nature(自然现象)。根据常识可知，电是一种物理现象，故应选D)。
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大学英语四级

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