题目内容：
A new technique ______, the yields as a whole increased by 20 per cent.A.)wording out
B.having been worded out
C.)having worded out
D.to have been worded ou
参考答案：
选择题：A new technique ______, the yields as a whole incr
- 题目分类：三门峡职业技术学院英语读写
- 题目类型：选择题
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A.)wording out
B.having been worded out
C.)having worded out
D.to have been worded ou