蚯蚓以土壤中的有机物为食，蚯蚓的活动还可以改良土壤，这可以说明 [ ]

A．生物与环境相互影响

B．生物必须适应环境

C．生物与环境相互协调一致

D．生物制约环境

Our company has been made one of the largest manufacturers in the field of chemical industry.

A．become, in

B．made, in field of

C．became, in the field

D．been made of, in