2. 专升本
  3. A new technique______, the yields as a whole increased by 20 percent.

A new technique______, the yields as a whole increased by 20 percent.

admin2016-11-13  50
问题 A new technique______, the yields as a whole increased by 20 percent.
选项 A、working out
B、having worked
C、having been worked out
D、to have been worked out
答案C
解析 句子的前半部分是一个带逻辑主语的独立结构，表示原因。
转载请注明原文地址:https://www.kaotiyun.com/show/XMHC777K
本试题收录于： 英语题库普高专升本分类
0

英语

普高专升本

相关试题推荐
随机试题
最新回复(0)