We talk every day. When we have good news, we like to share it with our good friends and when something terrible happens, we tell it to others soon. But can you imagine that a tree can talk and share news too ? Of course, no tree moves lips and says words just as people do. Strange as it may sound, though, some trees do manage to communicate with each other.
Willow (柳树) trees are the best-known of these trees. When insects begin nibbling (叮咬) a willow tree, the tree sends out a special smell at once. This smell tells the other willows that harmful insects are coming near. All of them quickly make a chemical (化学物质) in their leaves. This chemical is bad to the insects. The insects do not like it and they fly away soon. In this way, the willow trees protect themselves from the insects.
The next time when you take a walk in the woods, maybe the trees are “talking” to each other quietly. And when someone says that trees cannot “talk”, please tell them that even trees give messages to each other, too.
【小题1】Willow trees send messages with_____________.
A.wordsB.movementsC.smellsD.sounds
【小题2】The underlined word “lips” in the first paragraph means _____________.
A.树干B.嘴唇C.枝条D.手势
【小题3】The passage tells us that some of the trees can _____________.
A.speak just as people doB.tell stories to others
C.communicate with each otherD.kill insects in the woods
【小题4】According to the passage, the right order of the following is _____________.
a.  The willow tree gives out a smell.
b.  The willow trees make a chemical in their leaves.
c.  Insects fly away because of the chemical.
d.  Insects begin nibbling a willow tree.
A. d---a---b---cB. d---b---a---c
C. a---b---c---dD. d---c---b---a


In the 13th century, the Italian traveler, Marco polo , traveled a long way to China , During his stay in China , he saw many wonderful things . One of the things he discovered was that the Chinese used paper money . In western countries , people did not use paper money until the 15th century . However , people in China began to use paper money in the 7th century .
A Chinese man called CaiLun invented paper almost 2000 years ago. He made it from wood . He took the wood from trees and made it into paper . He then put these pieces of paper together and made them into a book .
Now paper still comes from trees . We use a lot of paper every day ! If we keep on wasting so much paper , there will not be any trees on the earth . If there are no trees , there will be no paper . Every day , people throw away about 2800 tons (吨) of paper in our city . It takes 17 trees to make one ton of paper . This means that we are cutting nearly 48000 trees every day . Since it takes more than 10 years for a tree to grow , we must start using less paper now . If we don’t , we will not have enough time to grow more trees to take the place of those we use for paper .
So how can we save paper ? We can use both sides of every piece of paper , especially when we are making notes .We can choose drinks in bottles instead of those in paper packets . We can also use cotton handkerchiefs (手帕) and not paper ones . When we go shopping , we can use fewer paper bags . If the shop assistant does give us a paper bag, we can save it and reuse it later .
Everyone can help to save paper . If we all think carefully , we can help protect trees . But we should do it now , before it is too late .
【小题1】When he was in China , Marco polo ___________ .

A.discovered CaiLun invented paper
B.learned to make paper
C.saw many wonderful things
D.told people about it
【小题2】About _______ tons of paper are thrown away every day in our city.
A.1700B.2000C.2800D.48000
【小题3】Which of the following is NOT the way of saving paper ?
A.To use both sides of every piece of paper
B.To use the paper bags from shops more than once
C.To use cotton handkerchiefs instead of paper ones
D.To grow more trees
【小题4】Which of the following is NOT TRUE ?
A.If we keep on wasting paper , we will have no paper to use
B.The Chinese used paper money much earlier than the people in western countries
C.About 48000 trees can be used to make 2800 tons of paper
D.It is never too late to plant trees for paper .
【小题5】Which is the best title (标题)of the passage ?
A.Saving PaperB.The history of Paper
C.Cotton Handkerchiefs Back AgainD.CaiLun , the Great Inventor

We have always been warned of the dangers of forest fires. They cause _____ 85 _____ to a forest. They kill many plants and animals in an eco-system, which is a group of living things and their environment. But have you ever heard of a forest fire that can be _____86_____  for a forest? People start some of the fires with a special reason to actually do good to the eco-system.

In fact, fires are a natural part of any eco-system. Without fires, the oldest and largest trees would stop sunlight from reaching the forest floor. Fires can _____87_____ some of these old trees. When the trees die, they provide something good for the earth. New trees can grow strong and healthy in their place.

Some trees even need fires to grow. These trees hold their seeds (种子) inside. Heat from a fire allows the coat of the seeds to open up. Then the seeds fall to the ground and have the _____88____ to grow/

Scientist, who know about nature’s needs, start some of these fires, called controlled burns. A fire is started and kept under control. This way, the fire does not spread out of the area or _____89_____ a after forest fires, they can go hungry _____90_____ their food has been damaged in the fire. Small, controlled fires mean than animals will not have to move far to find food. After some time, small plants begin to grow. Animals return soon after the plants return. This _____91_____  makes an eco-system.

So the next time you hear about a forest fire, think about the good as well as the bad. It may take a new eco-system a while to return, but it will likely come back stronger and healthier than ever.

 

1.A) illness     B) difficulty      C) damage       D) flood

2. A) helpful    B) powerful      C) harmful       D) awful

3. A) take the place of    B)  get ready for     C)  be bad for      D) get rid of

4.A) time       B) water       C) chance       D) skill

5.A) discover    B) cover       C) but          D) waste

6. A) because    B) although      C) but         D) so

7.A) almost     B) again        C) never      D) even

 

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