B

If you travel by air across the center of Africa or South America, you fly over forests for thousands of kilometers. These great forests are the oceans of trees. They are full of thousands and thousands of different kinds of plants and animals.

However, the forests in the world are getting smaller all the time. We are cutting down the trees because we need wood, and we need more farmland. Some people say that there will not be any forests like these in 20 or 30 years. What will happen if they disappear?

If we cut down our forests, a lot of plants and animals will disappear from the world. In a lot of places the new farmland will soon look like the old deserts. Crops will not grow there. It will not rain very often, and the weather will get very hot. Perhaps the climate of the world will change. This will be dangerous for everyone in the world. That is why we must take care of the forests.

56.  The passage mainly tells us about______.

   A.   the importance of taking care of the forests

   B.   the result of cutting down the trees

   C.   the locations (位置) of great forests

   D.   the reasons for forming the deserts

57.  Which of the following is true according to the passage?

   A.   Africa and South America are the oceans of trees.

   B.   Forests are homes for different kinds of animals.

   C.   Forests are usually several square kilometers large.

   I).   Different plants can’t he found in the same forest.

58. The need for more wood and more farmland results in_______.

   A.   the change of the world climate

   B.   the disappearance of many plants and animals

   C.   more deserts and less farmland

   D.   A, B and C are all correct.

59. What will happen in 20 or 30 years in some people’s view?

   A.   We’ll have more great forests.

   B.   We’ll have enough land to support our people.

   C.   We’ll have no forests like those in the center of Africa.

   D.   We’ll have enough wood to do some cooking.

60. The writer thinks ______.

   A.   it necessary for people to cut down the forests

   B.   it necessary for people to protect the forests

   C.   it impossible for people to take care of the world

    D.   it important for everyone to keep animals

 0  294256  294264  294270  294274  294280  294282  294286  294292  294294  294300  294306  294310  294312  294316  294322  294324  294330  294334  294336  294340  294342  294346  294348  294350  294351  294352  294354  294355  294356  294358  294360  294364  294366  294370  294372  294376  294382  294384  294390  294394  294396  294400  294406  294412  294414  294420  294424  294426  294432  294436  294442  294450  447348 

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网