.Banks accumulated a great deal of knowledge about plants and agriculture. In growing strawberries he went back to the abandoned of spreading straw under the fruit to reduce the necessary amount of watering..
A. custom
B. approach
C. practice
D. principle
网友回答
A. custom
B. approach
(答案→)C. practice
D. principle
解析：可联系答.案.网客服索取。