Question

阅读理解 　　 These are useful to man in three important ways：they supply us with wood and other products，they give us shade，and they help to prevent droughts and floods． Unfortunately，man has not realized that the third of these services is the most important．Eager to make money from trees，man has cut them down in a large number．And　besides, man is usually too careless to plant and look after mew 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 bind soilndline, thus preventing it from being washed away. And where there are no trees，the rain falls on hard ground and flows away，causing floods and carrying away the rich top soil. With the top soil gone，nothing remains but worthless desert. (1) The most important service of to man is ______. 　　A．to help him to make money 　　B．to give him shade and cool 　　C．to help him to prevent droughts and floods 　　D．to give him wood and other products [　　] (2) In many places forests slowly disappear because ______. 　　A．many trees have been cut down 　　B．man has not paid enough attention to planting trees 　　C．new trees have been cut down 　　D．all the above [　　] (3) Land becomes desert after all trees are cut down because ______. 　　A．no trees bind soil 　　B．there is too much rain falling on the ground 　　C．rain can cause floods and carry away the rich top soil 　　D．all the above [　　] (4) The underlined words “bind soil” in the passage “______”in Chinese． 　　A．干燥土壤 B．湿润土壤 c．疏松土壤 D．固定土壤 [　　] (5) The writer tries to let us know ______. 　　A．the importance of trees to man 　　B．the usage of wood 　　C．the function of tree roots 　　D．the close relation between trees and top soil [　　]

Answer 1

答案：1．C ;2．D ;3．D ;4．D ;5．A ;