2. 自考
  3. As research techniques become more______(advance)，the number of animals used in experiments may decrease，but stopping testing on

As research techniques become more______(advance)，the number of animals used in experiments may decrease，but stopping testing on

admin2011-01-31  33
问题 As research techniques become more______(advance)，the number of animals used in experiments may decrease，but stopping testing on animals altogether is a long way away.
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答案advanced
解析 v.→adj.advanced：高级的。
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