. From this simple concept that has caused a great change in farming.
A. has developed a technique
B. has a technique developed
C. a technique has developed
D. developed as a technique has
网友回答
(答案→)A. has developed a technique
B. has a technique developed
C. a technique has developed
D. developed as a technique has
解析：可联系答.案.网客服索取。