Tractors and other agricultural machines greatly 【facilitate】 fa

Tractors and other agricultural machines greatly 【facilitate】 farming.
A、communicate
B、subsidize
C、grade
D、ease
【正确答案】：D
【题目解析】：facilitate意为“便利，促进，帮助”；communicate交流；subsidize资助；grade评分；ease减轻，缓解；故选D。