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题目内容双击单词支持查询和收藏哦～
The techniques now available to livestock breeders will continue to be _____, but will probably be_____by new ones under development.
- Blank(i)
- refined
- inconvenient
- used
- Blank(ii)
- preserved
- supplemented
- uprooted
used , supplemented 显示答案
以上解析由 考满分老师提供。
