33. If you travel by air across the center of Africa or South America,you fly over forests for thou-sands of kilometers.These great forests are the oceans of trees.There 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 farm land.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 farm land 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 our forests.
(1)The passage mainly tells us about
.
A.the importance of taking care of our plants
B.the result of cutting down the trees
C.the locations of great forests
D.the reasons for forming the deserts
(2)The need for more wood and more land results in
.
A.the change of the world climate
B.the disappearance of many plants and animals
C.more deserts and less farm land
D.all of the above
(3)What will happen in 20 or 30 years in some people's view?
A.We'll have more and greater 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.
(4)The writer thinks
.
A.it dangerous for everyone to cut down the forests
B.it necessary for everyone to protect the forests
C.it important for everyone to take care of the world
D.it important for everyone to keep animals