Which material can be thrown into the sea on the nature of the material?
A. depended
B. depending
C. to depend
D. depends
网友回答
A. depended
(答案→)B. depending
C. to depend
D. depends
解析：考察非谓语动词用法。本句中的depending on the nature of material在句中做状语。句义：根据材料的性质来看，那些材料可以被扔进海里？这里的depending on相当于according to…根据…；故B正确。