对19世纪初的“交通革命”作出重大贡献的科学家有 [ ]
A.牛顿、爱迪生、法拉第
B.瓦特、富尔顿、史蒂芬孙
C.牛顿、富尔顿、法拉第
D.瓦特、史蒂芬孙、法拉第
答案:B
__________that they found an unusual plant in the forest.
A.It is said
B.They are said
C.It said
D.It says