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.

admin2009-08-21  80
问题 A new technique ______, the yields as a whole increased by 20 percent.
选项 A、working out
B、having worked out
C、having been worked out
D、to have been worked out
答案C
解析 本题考分词的独立结构作状语的用法。结合语态，故C项正确。本句大意为：新技术研究出来之后，整个产量增长了20%。
转载请注明原文地址:https://kaotiyun.com/show/4cSC777K
本试题收录于： 英语题库成考专升本分类
0

英语

成考专升本

相关试题推荐
随机试题
最新回复(0)