What can be done to prevent erosion associated with grazing animals?A.keep them in the same part of the field year-roundB.isolate them along stream banksC.move them around from place to place throughout the yearD.ensure that animals move up and down

What can be done to prevent erosion associated with grazing animals?
A.keep them in the same part of the field year-round
B.isolate them along stream banks
C.move them around from place to place throughout the year
D.ensure that animals move up and down slopes and not across them

选C
该题的意思是：如何防止放牧动物的侵蚀
C选项的意思是：让它们不断从一个地方挪到另个地方
感觉本题应为阅读理解题,还应参照原文进行分析