2. 外语
  3. When two chemical compounds are combined, a______effect can be achieved: the resulting combination can be more potent than eithe

When two chemical compounds are combined, a______effect can be achieved: the resulting combination can be more potent than eithe

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问题 When two chemical compounds are combined, a______effect can be achieved: the resulting combination can be more potent than either of the individual compounds alone.
选项
答案A，D
解析 冒号表示前后同义重复。后文说最后混合的结果会比单独任何一个效果都强，对应到空格，填入一个带有“效果变强的”含义的词即可。synergistic增效的，naturalistic自然主义的，competitive竞争的／抑制的，cooperating互相促进的，neutralizing使无效的，counteracting抵消的。答案选AD。注：这里neutralizing和counteracting是干扰项，同表示“效果减弱的”。
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