下列金属导电能力最强的( )
A.铝
B.铁
C.铜
D.银
在金属中导电性最好的是银,铜的导电性仅次于银.
故选D.
—Can you tell me who the telephone?
—Alexander Graham Bell.[ ]
A. invented
B. discovered
C. created
D. found
通告