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For centuries animals have been used as ____ for people in experiments to assess
For centuries animals have been used as ____ for people in experiments to assess
游客
2024-01-10
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问题
For centuries animals have been used as ____ for people in experiments to assess the effects of therapeutic and other agents that might later be used in humans.
选项
A、benefactors
B、companions
C、examples
D、precedents
E、surrogates
答案
E
解析
- 方程等号:later表现时间对比,前后句意反义重复。
- 强词和对应:空格和use构成反义重复,之后在人身上使用,所以之前在人身上“不使用”药,在动物身上使用药物,所以动物就是人类的替代品。benefactor捐赠者,companion同伴,example例子,precedent先例,surrogate替代品。答案选E。
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