What led Franklin to talk with U.S. captains? ( )(本题0.5分)
A、 U.S. ships were longer than British ones.
B、 British ships could sail the Atlantic faster than U.S. ones.
C、 U.S. ships could sail the Atlantic faster than British ones.
D、 U.S captains knew more about maps.
出自:华北水利水电大学混凝土结构设计原理