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当前位置: 好大学 > 试卷库 > 学历类 > 自考 > 自考专业(英语) > 外语教学法 >Even with the new development in research, only a tiny ________ of all tests are done without using animals. 

Even with the new development in research, only a tiny ________ of all tests are done without using animals. 

  • A. variety
  • B. amount
  • C. plenty
  • D. proportion
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正确答案: D

本题解析:

本句的意思是:“即使研究有了新的发展, 只有一小部分的试验可以不用动物” 。因此答案为 D。variety 和 plenty 分别表示“多样”和“大量的”,意思不合适。 amount 后只能接不可数名词,而 test 是可数名词。

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