Silver is the best conductor of electricity,copper__________it c

Silver is the best conductor of electricity,copper__________it closely.
A、followed
B、following
C、to follow
D、being followed
【正确答案】：B
【题目解析】：【考情点拨】考查非谓语动词。【应试指导】句意：银是最好的导电体，铜紧次之。copper与follow之间为主动关系，故用现在分词形式。