Whether substances are medicines or poisons often depends on dosage, for substances that are (i)______in small doses can be (ii)

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问题 Whether substances are medicines or poisons often depends on dosage, for substances that are (i)______in small doses can be (ii)______in large.

选项

答案C,E

解析 逗号说明前后同义重复。第一空与medicines(药品)同义重复。useless无效的,mild温和的,curative有疗效的。答案选C。第二空与poisons(毒药)同义重复。miraculous奇迹般的,toxic有毒的,innocuous无害的。答案选E。
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