19.Trees are useful to man in three important ways:they provide him with wood and other products; they give him shade; and they help to prevent droughts and floods.
Unfortunately,in many parts of the world,man has not realized that the third of these services is the most important.In order to make money from trees,he has cut them down in large numbers,only to find that without them he has lost the best friends he had.And besides,he is usually too careless to plant and look after new trees.So the forests slowly disappear.
This does not only mean that man will have fewer trees.The results are even more serious:for where there are trees,their roots break up soil---allowing the rain to sink in---and also keep the soil,thus preventing it from being washed away easily; but where there are no trees,the rain falls on hard ground and flows away,causing floods and carrying away the rich topsoil.When all the topsoil is gone,nothing remains but worthless desert.
Two thousand years ago a rich and powerful country cut down its trees to build warships,with which to gain itself an empire.It set up the empire but,without its trees,its soil became poor and it grew weak.When the empire fell to pieces,the home country found itself faced with floods and starvation.
59.What is the most important service of trees to man according to the passage?B
A.They help him make money.B.They help him prevent droughts and floods.
C.They give him wood and other products.D.They give him shade.
60.Why do forests in many parts of the world slowly disappear?D
A.New trees are not looked after properly.B.Many trees have been cut down by man.
C.Man has not paid enough attention to planting trees.D.All of the above.
61.Why did the country mentioned in the passage suffer from floods and starvation?A
A.Because it lost all its trees.B.Because the empire fell to pieces.
C.Because an empire was set up.D.Because too much had been spent on wars.
62.Why does land become desert after all trees are cut down?D
A.Because nothing remains on land except floods.
B.Because roots of the trees break up the soil.
C.Because too much rain sinks in and washes away the topsoil.
D.Because there are no longer trees to keep the rain and protect the topsoil.
63.Which title best fits the passage?C
A.How do People deal with Trees?
B.The Function of Tree Wood
C.Trees and Man
D.The Usage of Tree Roots.
分析 本文主要講述人類和樹木的關系.
解答 BDADC
59 B 細節(jié)題:從第一段的句子:They provide him with wood and other products; they provide him shade;.and they help to prevent droughts(早災)and floods.可知答案是B
60 D 細節(jié)題:文章第二段.In order to make money from trees,he has cut them down in large numbers,only to find that without them he has lost the best friends he had.And besides,he is usually too careless to plant and look after new trees.提到ABC的內容:樹木沒有得到照料,被砍伐等都是原因,選D
61 A 推理題:從最后一段的句子:without its trees,its soil became poor and grew weak.When the empire fell to pieces,the home country found itself faced by floods and starvation(饑荒).看出是因為沒有樹木造成的.選A
62 D 細節(jié)題:從第三段的內容:but where there are no trees,the rain falls on hard ground and flows away,causing floods and carrying away the rich top-soil.When the top-soil is gone,nothing remains but worthless desert.可知沒有大樹,表層泥土就會流失,導致沙漠的形成.選D
63 C 主旨題:從第一段的主題句:Trees are useful to man in three important ways:可知是講-樹和人類的關系.選C
點評 做閱讀理解時要快速的瀏覽全文,把握文章主旨大意,帶著問題回到原文,尋找細節(jié)或概括相應的答案,最后要理清作者寫作思路.