What can you do on the Internet? Many of us like to read the news, buy things and play games. Some students now have a new use for the Internet – helping them with their homework.
Tina, 14, from Shenzhen, Guangdong, often searches online for the answers to her math problems. She said sometimes she and even her parents don’t know the answers to the problems, so she has to turn to the Internet.
“I can see how other people work out these problems and learn from them,” Tina said. “It’s easy and saves time.”
But not all the students welcome this. Leo, 15, from Hangzhou, Zhejiang, thinks it may make students stop thinking.
“We should think over the problems first. Simply copying the answers won’t improve our abilities. ” he said.
In the eyes of Wang Zhaoming, a Shanghai teacher, the success of all this is down to the students. If they use the Internet properly (适当地), it could be a good tool for study, Wang said.
“Students should first think about the problems by themselves. As for the online answers, they should choose the best among different ones. The most important thing is to know the logic (逻辑) behind the answers,” he said. “Don’t be shy to ask teachers and classmates the next day if you don’t understand the answer.”
【小题1】According to the passage, it’s a new use for students to ___________ on the Internet.

The world itself is becoming much smaller by using modern traffic and modern communication. Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest problems is pollution.

To pollute means to make things unfit or unclean to use. Pollution comes in many ways. We see it, smell it, drink it and even eat it. Pollution is beginning to threaten (威胁) our health, our happiness and our life.

Man has been polluting the earth from the time he first made fire, washed his clothes in the river and threw his waste on the ground. When land was used up or water became dirty, men moved on to another place. At first, the problem was not so serious because there was plenty of clean air, land and water. There weren’t so many people then and their wants fewer. All the dirty things could be absorbed(吸收) by nature and soon covered over. But this is no longer true. The increase of pollution and the development of industry(工业) have changed that. Man is slowly poisoning(毒害)not only his environment but also himself.

Through the use of poison, man has polluted the land, killing the animals. By putting dirty water and chemicals into rivers and lakes we have polluted our drinking water, killing the fish.

Our increasing population is part of the problem. More people, more waste.

Where is this all to end? Are we turning the world into a big rubbish dump(堆存处)，or is there any hope that we can get rid of (摆脱，除去) the pollution? Luckily, millions of people have been warned of the danger of pollution. Large numbers of people are now working hard to bring pollution under control.

The earth is our home. We must take care of it. This means keeping the land, air and water clean. And we must take care of the rise in pollution at the same time.

1.Which of the following is NOT true according to the passage?

A. We live on the earth, so we should look after it.

B. Man is fighting against different kinds of pollution.

    C. To pollute means to make air, water and land unfit for use.

D. All the waste produced by modern industry can be absorbed.

2.In Paragraph4, the underlined word “chemicals” mean ____________.

A. 化学物质    B. 医疗器械     C. 污染源       D. 塑料制品

3.Through the uncontrolled use of poison man has___________.

    A. made the drinking water dirty        B. polluted the land

    C. killed the animals                   D. all of the above

4.From the sentences “More people, more waste.” We know that ___________

    A. we need more people, not more waste

B. the increase of population caused more waste.

    C. there isn’t any hope that we can get rid of the pollution

D. More people have been warned of the danger of more waste.

5.Which of the following is TRUE according to the passage?

A. Man begins to understand the pollution.                  

B. Man doesn’t know how to control pollution.  

C. Man is doing something to control pollution.

D. Man still doesn’t realize how serious pollution is.

DNA is the whole “map” of the human body. It is something that all humans have, and it tells the body what to do. DNA is the reason that we look like our parents, because we get some of their DNA to make our own.
People have been trying to understand the human body for a long time, In1860, Mr Mendel discovered why we look the same as other people in our family. It is because of small things called “genes”(基因) in our body. In 1953, two scientists, Watson and Crick, found out that those small parts are really messages . They’re written in the DNA with a special language.
In1961, another two scientists found the first “word” that they could understand in that language. It shows how DNA tells the cell﹙细胞﹚to build its parts. So far, scientists have found all the words in the DNA map, but we still do not understand what they all do. By understanding what just one “word ”means, we can help to save people from several illness. So the more we understand, the more doctors will be able to do.
Most people hope that this will help to make better medicine and help sick people. Other people worry that when we learn more “words” and find out more information, we will use it in the wrong way, just to make people more attractive (有吸引力的)，or stop sick people getting jobs.
【小题1】When did Mr Mendel discover why we look the same as other people in our family?
A. In 2000.     B. In 1961      C. In 1953     D In 1860
【小题2】What did the two scientists find in 1961? They found_____.

Helen Keller lived in the U.S.A. She was a great woman.
When Helen was a baby, she got very sick. After many weeks, the doctor said, “ She is better, but now she can’t see or can’t hear.” Her mother and father were very sad.
After a few years, things got worse. There was no way for Helen to speak with other people. She heard nothing. She saw nothing. She didn’t understand anything.
Then one day a teacher came to live with Helen and her family. The teacher helped Helen learn about words. Helen was a very bright child and soon she learned to spell her first word. When she was older, she went to college(大学).
Helen was very famous. She helped many blind(盲) and deaf(聋) people. She traveled around the world and helped many people.
Helen was a very old woman when she died. The world remembers her today as a brave and wonderful person. She was blind and deaf, but she found a way to see and hear.
(       )1 Helen Keller got very sick when ____________
A She was a baby                B She went to college
C Her teacher came to her home   D She was very old
(       )2__________taught Helen Keller her first word.
A Her mother  B Her teacher C Her father  D The doctor
(       )3 Helen Keller was famous because ___________
A She was an American.
B She traveled around the world
C Ser teacher taught her many things 
D She learned to read and write and helped many people in the world
(       )4 The world remembers Helen Keller today because ____
A She was very bright.   
B She was blind and deaf.
C She was a brave and wonderful person. 
D She went to college.
(       )5 Helen Keller was blind and deaf, but _______
A She found a way to understand the world.
B Her mother and father didn’t feel sad.
C She found a way to travel around the world.
D She found out how people became blind and deaf.

Helen Keller lived in the U.S.A. She was a great woman.
When Helen was a baby, she got very sick. After many weeks, the doctor said, “ She is better, but now she can’t see or can’t hear.” Her mother and father were very sad.
After a few years, things got worse. There was no way for Helen to speak with other people. She heard nothing. She saw nothing. She didn’t understand anything.
Then one day a teacher came to live with Helen and her family. The teacher helped Helen learn about words. Helen was a very bright child and soon she learned to spell her first word. When she was older, she went to college(大学).
Helen was very famous. She helped many blind(盲) and deaf(聋) people. She traveled around the world and helped many people.
Helen was a very old woman when she died. The world remembers her today as a brave and wonderful person. She was blind and deaf, but she found a way to see and hear.
【小题1】Helen Keller got very sick when ____________