2. 外语
  3. As research techniques become more advanced, the number of animals ______ (use) in experiments may decrease.

As research techniques become more advanced, the number of animals ______ (use) in experiments may decrease.

admin2009-05-28  55
问题 As research techniques become more advanced, the number of animals ______ (use) in experiments may decrease.
选项
答案used
解析 非谓语动词。分词或分词短语作定语时，如果被修饰的中心词与分词的关系是主动关系，用现在分词；如果被修饰的中心词与分词的关系是被动关系，则用过去分词。
转载请注明原文地址:https://www.kaotiyun.com/show/omvK777K
本试题收录于： 大学英语三级A级题库大学英语三级分类
0

大学英语三级A级

大学英语三级

相关试题推荐
随机试题
最新回复(0)