When you watch TV programs about wild animals,it is surprising to see how an antelope(羚羊)can run away from a strong lion.In the wilderness,everyone has his own way to protect himself.Even plants have their own ways to fight off enemies.

Over millions of years,plants have developed their own defense system(防卫系统).Chemicals are fantastically used by plants to survive(幸存).By making their leaves,flowers,roots and fruits poisonous(有毒的)to enemies,plants can fight back.

One such plant is the Golden Wattle tree.The British scientist David Cameron has found when an animal eats the tree’s leaves,the amount(数量)of poison increases in the other leaves.”It’s like the injured leaves telephoning the others to fight together against the enemy,” he said.

The tree also sends defense messages to neighboring plants by giving out a special smell.Golden Wattle trees in the nearby 45 meters will get the message and produce more poison within 10 minutes.Now,if an enemy eats too many of the trees’ leaves,he willdie.

Every kind of plant or tree is good at producing a special set of chemicals.Herbivores,like rabbits,can safely eat the leaves of one tree,but they may be poisoned by its neighbor.

In this way,plants have not only developed their own defense system,but also shared it with others.This makes it impossible for a single animal to destroy(毁坏)even a small area of forest.

( ) 1.From the first 2 paragraphs,we can learn that________.

A.plants can do nothing against their enemies

B.chemicals are quite useful for plants to survive

C.an antelope can always run away from a strong lion

D.leaves,roots,flowers and fruits of plants are poisonous

( ) 2.If animals eat one Golden Wattle tree’s leaves,the tree can________.

A.kill the animals with a special smell

B.tell other trees to come to protect it

C.warn other trees against the animals on the phone

D.send defense messages to the neighboring plants

( ) 3.The word “herbivores” in the 5th paragraph probably means animals which________.

A.produce poison B.live on small animals

C.like to eat rabbits D.feed on plants or grass

( ) 4.The last paragraph of the passage suggests that this kind of defense system is________.

A.bad for animals B.good for forests

C.helpful to some animals D.harmful to forests

( ) 5.The passage is mainly about.________

A.the examples of protecting forests

B.the balance(平衡)between animals and plants

C.the ways of plants fighting against enemies

D.the relationship between lions and antelopes


Life is like the four seasons.Now I am very old,but when I was young,it was the spring of my life.I was born,I played a lot,and then I started school.I learned many new things.Like a flower,I grew bigger every day.There were happy days and sorrowful days:some days the sun shone,and some days it didn’t.

In my twenties,I had a good job.I was strong and happy.Then I married and had a child.In those days,I didn’t have much time to think.Every day I was busy and worked very hard.And so,I started to get some white hairs.The summer of my life passed quickly.

Then the days got shorter.Leaves fell from the trees.My child was a university student,and then an engineer.My home was much quieter.I started walking more slowly.One day I stopped working.I had more time.I understood this was my autumn,a beautiful time when the trees change color and give us delicious fruits.

But the days kept getting shorter and colder.Winter has come.I am older and weaker.I know I do not have many days left,but I will enjoy them to the end.

(    )1.The writer started walking more slowly in the________of his life.

A.spring                B.summer              C.autumn              D.winter

(    )2.According to the passage,which of the following ages is during the summer of his life?

A.15.                    B.33.                     C.62.                    D.87.

(    )3.What does the word “sorrowful” mean in this passage?

A.Sad.                   B.Exciting.             C.Wonderful.         D.Pleasant.

(    )4.Which of the following is true?

A.The writer was an engineer.

B.The writer had a garden with flowers.

C.The writer was always happy as a child.

D.The writer now is old and weak,but still he enjoys his life.

(    )5.The best title of the passage can be “       ”.

A.Four Seasons                                                B.My Life

C.Four Seasons in a Year                                  D.Four Seasons in My Life


阅读理解,阅读下列短文,从每小题所给的A、B、C、D四个选项中选出一个最佳选项。

When I was 16 years old,I made my first visit to the United States.It wasn’t the first time I had been abroad.Like most English children,I learnt French at school and I had often been to France,so I was used to speaking a foreign language to people who didn’t understand English.But when I went to America I was really looking forward to having a nice easy holiday without any language problems.

How wrong I was! The misunderstanding began at the airport.I was looking for a public telephone to give my American friend Danny a ring and tell her that I had arrived.A friendly old man saw me looking like being lost and asked if he could help me.

“Yes,” I said.“I want to give my friend a ring.”

“Well,that’s nice,” he exclaimed(惊呼).“Are you getting married? But aren’t you a bit young?”

“Who is talking about marriage?” I replied.“I just want to give my friend a ring to tell her I’ve arrived.Can you tell me where there’s a phone box?”

“Oh!” he said.“There’s a phone downstairs.”

When at last we did meet up,Danny explained the misunderstanding to me.“Don’t worry,” she said to me.“I had many difficulties at first.There are lots of words which the Americans use differently in meaning from us British.You’ll soon get used to all the funny things they say.But most of the time British and American people can understand each other!”

(    )1.Which sentence is right according to the passage?

A.This was the first time for the writer to go abroad.

B.The writer could speak French and English.

C.He thought he would have some difficulties in understanding the Americans.

D.The writer had been to the USA many times.

(    )2.When the writer arrived at the airport,he wanted to________.

A.buy a ring for his friend                                B.ask the way to his friend’s

C.telephone his friend                                      D.call a taxi

(    )3.The old man thought________.

A.the writer wanted to find a phone box            B.the writer was old enough to get married

C.the writer didn’t know the way                      D.the writer wanted to find his girlfriend

(    )4.At last,the old man________.

A.understood what the writer wanted to do

B.couldn’t understand the writer

C.bought a ring for the writer

D.took the writer to the phone box by himself

(    )5.Which sentence is NOT true according to the passage?

A.The writer’s friend,Danny had a lot of difficulties in the USA at first.

B.There are some differences between American and British English.

C.British people can’t understand the Americans most of the time.

D.British and American people can understand each other most of the time.

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