is well known to the peasants,pests continue to eat crops, damage.
A. It;causing
B. As;caused
C. It;caused
D. As;causing
网友回答
A. It;causing
B. As;caused
C. It;caused
(答案→)D. As;causing
解析：首先考查as引导的非限制性定语从句,意为“正如农民们所知”,如用 “it” 则为“It’s known to sb.that...”；其次考查非谓语动词。cause与pests之间存在着主动关系,因此用causing。