（10分）

(1)
Why are drifting bottles used?
（2分）
A To determine the position of a ship.
B To find the direction of a current.
C To predict the direction of a ship.
D To carry message across the ocean.
正确答案B



(2)
What led Franklin to talk with U.S. captains?
（2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 U.S. ones.
D U.S captains knew more about maps.
正确答案C



(3)
What did Franklin make after his talks with U.S. captains?
（2分）
A A map of the Gulf Stream.
B A map of the Atlantic Ocean.
C A map of ocean currents.
D A map of his first voyage.
正确答案A



(4)
What did Franklin do in order to make an exact map?
（2分）
A He compared his own map with other maps.
B He talked with many U.S. captains.
C He used drifting bottles to check his map.
D Both B and C.
正确答案D



(5)
The underlined word current in the first paragraph means __________.
（2分）
A a stream of water
B a course of events
C the flow of electricity
D the situation of the present time
正确答案A