Forests are no less important than useful.

Most rain forests lie close to the equator(赤道),where the climate is often mild and there are long hours of sunshine.The warmth of the land heats the air above,causing it to rise and tiny drops of water to fall as rain.The rainfall can reach at least 98 inches a year.This wet,warm world with plenty of sunlight is perfect for plants to grow,so the trees grow fast with green leaves all the year round.The trees themselves also have an effect on the climate.They gather water from the soil and pass it out into the air through their leaves.The wet air then forms clouds,which hang over the treetops like smoke.These clouds protect the forest from the daytime heat and night-time cold of nearby deserts,keeping temperatures fit for plant growth.
Rain forests slightly farther away from the equator remain just as warm,but they have a dry season of three months or more when little rain falls.Tree leaves fall during this dry season and new leaves grow when the wet season or monsoon(雨季) begins.Thus these areas are known as the “monsoon forest”.
Another type of rain forest grows on tropical mountains.It is often called the “cloud forest” because clouds often hang over the trees like fog.
The rain forest is the ideal place for the growth of many different trees.Most of them depend on animals to eat their fruits and spread their seeds.When the fruits are eaten,the seeds inside them go undamaged through animals’ stomachs and are passed out in their droppings.The seeds lying on the forest floor then grow into new trees.
小题1:The climate of the rain forests near the equator is _______.

A．mild,wet and windy	B．hot,rainy and foggy
C．hot,wet and cloudy	D．warm,wet and sunny

小题2:We can learn from the passage that _______.

A．tree leaves are green all the time in the monsoon forest

B．there is a dry season in the cloud forest on tropical mountains

C．clouds help the plants in the rain forest near the deserts to grow

D．the formation of climate in the rain forest has little to do with the trees

小题3:According to the passage,_______ play the most important role in the spreading of seeds.

A．animals

B．droppings

C．fruits

D．winds

小题4:This passage is most likely to be found in _______.

A．a travel guide	B．a story book
C．a technical report	D．a geography book

Forests have always been useful and important to men who make use of them in many ways. Every day trees are serving man everywhere. Trees supply man with fruits and building materials in the form of wood. Without trees it would be impossible to build houses, boats, bridges and so on. Furniture such as desks, chairs and beds is made of wood. Trees can stop man from the terrible heat. They’re also useful in preventing(阻止) good and rich top soil from being washed away during heavy rains. If there were no forests, heavy rains would wash away the rich surface(表层) soil that is so important to plants. The result is that the land will become a desert. There are plenty of desert areas in the world. A long time ago these desert areas used to be very rich areas, but men in the past had no enough knowledge about science of nature, and they cut down too many trees in the area where they lived and never planted new ones. By and by, the rich surface soil was blown and washed away by strong winds and heavy rains. In the end the rich land changed into useless deserts where nothing could grow.
根据短文内容，判断正（T）误（F）。
1.Trees are not serving man everywhere.
2.Without trees it would be possible to build houses, boats, bridges and so on.
3.Trees can stop man from the terrible heat.
4.There are few desert areas in the world.
5.In the end the rich land changed into useless deserts where nothing could grow.

With more forests _____being destroyed, huge _____ of good earth _____ washed away each year.

A．are ; number ; is	B．/ ; quantities / are
C．be ; number ; are	D．/ ; quantities ;is

Coal was formed out of dead forests through a long _____ of chemical changes.

A．stage

B．access

C．order

D．process

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In 1620, about half the USA was covered by forests． Today the forests have almost gone． A lot of good land has gone with them, leaving only sand． China doesn’t want to copy the USA’s example． We’re planting more and more trees． We’ve built the " Great Green Wall" of trees across northern part of our country．The Great Green Wall is 7,000 kilometres long, and between 400 and 1,700 kilometres wide． It will stop the wind from blowing the earth away． It will stop the sand from moving towards the rich farmland in the south． More "Great Green Walls" are needed． Trees must be grown all over the world． Great Green Walls will make the world better．
小题1:In 1620, about ______ the USA was covered by forests．

A．a third

B．half

C．two thirds

D．a fourth

小题2:A lot of good land has gone with ______．

A．sand

B．water

C．wind

D．forests

小题3:The Great Green Wall in China is ______ long．

A．7,000 kilometers	B．1,700 kilometers
C．7,000 meters	D．400 kilometers

小题4:Trees must be grown in ______.

A．China	B．the USA
C．some countries	D．every part of the world

小题5:_____ will make the world better．

A．The Great Wall	B．Tall buildings
C．Great Green Walls	D．Flowers and grass