Many important inventions are the result of (i)______; for example, Chinese alchemists accidentally discovered gunpowder while t

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问题 Many important inventions are the result of (i)______; for example, Chinese alchemists accidentally discovered gunpowder while trying to create (ii)______that would make their emperor immortal.

选项

答案C,E

解析 分号说明前后同义重复;that引导定语从句,前后同义重复.第一空与accidentally(偶然地)同义重复。perseverance百折不挠,expedience得当,serendipity意外。答案选C。第二空与would make their emperor immortal(让他们的皇帝长生不老)同义重复.bane毒药,elixir长生药,toxin毒药。答案选E。
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