Trees are useful to man in three very important ways：they provide him wood and other products;they give him shade;and they help to prevent drought(干旱)and floods.
Unfortunately，in many parts of the world，man has not realized that the third of these services is the most important.In his eagerness to draw quick profit from the trees，he has cut them down in large numbers
Two thousand years ago，a rich and powerful country cut down its trees to build warships，with which to gain itself an empire It gained the empire but，without its trees，its soil became bare and poor.When the empire fell to pieces，the country found itself faced by floods and starvation.
Even where a government realizes the importance of a plentiful supply of trees，it is difficult sometimes to make the people realize this.They cut down the trees but are too careless to plant and look after new trees So，unless the government has a good system of control，or can educate the people，the forests slowly disappear
This does not only mean that there will be fewer trees.The results are even more serious：for where there are trees，their roots break the soil up，allowing the rain to sink in， and also bind the soil.This prevents the soil from being washed away.But where there are no trees，the rainfalls on hard ground and flows away on the surface，and this causes floods and the rain carries away the rich topsoil in which crops grow When a11 the topsoil is gone.nothing remains but worthless desert.
1.Trees are useful to man mainly in three ways，the most important of which is that they can ____
A. keep him from the hot sunshine B.enable him to build warships
C.make him draw quick profit from them D .protect him from droughts and floods
2.It’s a great pity that ____
A.man is only interested in building empires B.man is eager to profit from trees
C.man hasn’t realized the importance of trees to him D. man hasn’t found out that he has lost all trees
3.Sooner or later the forests will disappear ______.
A. unless a country has a plenty supply of trees B.unless people stop cutting down their trees
C.unless aIl people are taught the importance of planting trees
D.unless the government punishes those who cut trees instead of planting them
4.The word“bind”in Paragraph 5 means“_____”
A.to wash away B.to make wet C.to make stay together D.to improve
5. When there is a heavy rain.trees can help to prevent floods.as they can.
A.keep rain from falling down to soft ground B，cause the soil to allow rainwater to sink in
C.prevent the soil from being washed away D .make the topsoil stick together
Some of the notebooks George Washington kept as a young man are still in existence. They show that he was learning Latin，was very interested in the basics of good behavior in society，and was reading English literature.
At school he seems only to have been interested in mathematics.In fact，his formal education was surprisingly brief for a gentleman，and incomplete For unlike other young Virginian of that day，he did not go to the College of William and Mary in the Virginian capital of Williamsburg.In terms of formal training then，Washington contrasts sharply with some other early American Presidents such as John Adams，Thomas Jefferson and James Madison.In later years，Washington probably regretted his lack of intellectual training He never felt comfortable in a debate in Congress(国会)，or on any Subject that had not to do with everyday，practical matters And because he never learned French and could not speak directly to the French leaders，he did not visit the country he admired SO much.Thus，unlike Jefferson and Adams，he never reached Europe
1.Why didn’t Washington go to college?
A.His family could not afford it. B A college education was rather uncommon in his time.
C.He didn’t like the young Virginian gentlemen D.The author doesn’t give any reason.
2.Washington felt uncomfortable in Congress debates because he _____
A.1acked practice in public speaking B.felt his education was not good enough
C.didn’t like arguing and debating with people D felt that debating was like intellectual training
3.The reason why Washington didn’t visit France was probably that he _____
A.didn’t really care about going B.didn’t know French 1eaders
C.couldn’t communicate directly with the French leaders D.was too busy to Navel
4 According to the author ______
A Washington’s lack of formal education placed him at a disadvantage in later life
B.Washington should have gone to France even though he could not speak French
C.Washington was not as good a president as Adams，Jefferson or Madison
D Washington was a model for all Virginian gentlemen
5.The main idea of the passage is that Washington’s education _____
A was of great variety，covering many Subjects
B was probably equal to those of most young gentlemen of his time
C.may seem poor by modern standards.but was good enough for his time
D was rather limited for a president
