导读:A new technique ____ out,the yields (收成) increased by 20% . A new technique ____ out,the yields (收成) increased by 20% .A.having workingB.having been workingC.has workedD.had been worked...
A new technique ____ out,the yields (收成) increased by 20% .
A new technique ____ out,the yields (收成) increased by 20% .
A.having working
B.having been working
C.has worked
D.had been worked
lowendal
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rgi7zb5
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该名网友总共回答了16个问题,此问答他的回答如下:采纳率:87.5%
答案B
根据逗号分开可知空白处不能填入谓语动词,A项从形式上就不对,根据语境应该用现在分词的完成式,此处work out表示“产生结果;有预期的结果,发展为”例如:I wonder how their ideas worked out in practice?我很想知道他们的想法在实践中取得了什么结果.
1年前他留下的回答
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