【单选题】

The modern sailing ship was developed by a man who never went to sea.

He was Prince Henry of Portugal,the younger son of the Partuguese king and an English princess.
Prince Henry lived in the fifteenth century.As a boy he became devoted to the sea,and he dedicated himself to improving the design of ships and the methods of sailing them.In 1416,when he was twentytwo,Henry founded a school for mariners,
to which he invited everyone who could help him—Jewish astronomers,Italian and
Spanish sailors,and Arab mathematicians and map makers who knew to use the crude
compass of the day and could improve it.
Henry's goal was to design and equip vessels that would be capable of making long ocean voyages without having to hug the shore.The caravel carried more sail and was longer and slimmer than any ship then made,yet was tough enough to withstand gales at sea.He also developed the carrack,which was a slower ship,but one that was capable of carrying more cargo.
To Prince Henry the world owes credit for development of craft that made oceanic
exploration possible.He lives in history as Henry the Navigator.
36. Henry the Navigator was a member of the royal family of____.
A.England 
B.Spain 
C.Italy 
D.Portugal 
37. Prince Henry started his school for the purpose of____.
A.helping mariners
B.improving ship design and sailing methods
C.studying astronomy and mathematics
D.improving his own skill as a sailor 
38. The teachers in Prince Henry's school seem to have been____.
A.members of the royal family
B.astronomers,sailors and map makers
C.shipbuilders
D.All of the above 
39. Prince Henry's goal was to design vessels that could____.
A.make long deepsea voyages
B.travel faster than those in use at that time
C.explore the coastline of Portugal
D.carry larger crews and more cargo than existing one 
40. The best title for this passage is
A.The First Modern Sailing Vessels
B.The Mariner Prince
C.Prince Henry's Role in History
D.The First School for Sailors