Trees are useful to man（人类）in three very important ways. The first important way is that they provide man with food, wood and other products. Trees provide not only man with food, but also many animals with food. Without trees many animals could not live on the earth. It's not easy for man to live on the earth, either.
The second important way is that trees give us shade. On a hot summer day, people are eager(渴望)to have a rest under the shade of a tree after they have walked a long way. You can imagine how important the shade of a tree is to man and to animals.
The third important way is that trees help to prevent drought（干旱）and floods（洪水）. However, in many parts of the world, man has not realized the third important way. He has cut trees down in large numbers. In the end he finds that he has lost the best friends he had.
【小题1】Trees are important to man in ways. A．2B．3C．4D．5【小题2】Which sentence is true?A．Trees give food to both man and animals.B．Trees only provide animals with food. C．Trees give food to neither man nor animals.D．Trees only provide man with food【小题3】On a hot summer day, . A．people are eager to have a restB．people usually walk a long wayC．animals don't need shadeD．the shade of a tree is very important to man and to animals【小题4】In many parts of the world, man has not realized that trees help to A．give us food B．give us shadeC．prevent drought and floodsD．give us wood【小题5】In this story the underlined word He means . A．farmerB．manC．workerD．boyB
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(答案→)B
解析：这篇短文主要从三个方面说明了树木对于人类的重要性。
【小题1】根据第一段Trees are useful to man（人类）in three very important ways.描述，可知选B。
【小题2】根据第一段Trees provide not only man with food, but also many animals with food.描述，可知选A。
【小题3】根据短文第二段描述，可知选D。
【小题4】根据第三段The third important way is that trees help to prevent drought（干旱）and floods（洪水）. However, in many parts of the world, man has not realized the third important way.描述，可知选C。
【小题5】联系前文man has not realized the third important way.描述，可知选B。