Scientists in Britain and the United States have made a new kind of enzyme（酵素）that eats plastics（塑料）． With its help， plastics can be turned into smaller parts and go away quickly． Scientists believe that， in the future， it could solve the problem of plastic pollution．
The enzyme is able to break downPET， a form of plastic． PET was first made in the 1940s and is now widely used to make plastic bottles． It can remain in the environment for many years and pollute large areas of land and water． So it has always been a headache to deal with the waste from PET and other plastics．
The researchers made the discovery（发现）while examining the structure of a natural enzyme in Japan． They found that the natural enzyme was helping to break down PET plastics． So， they decided to make small changes to the enzyme by adding some amino acids（氨基酸）． It made the natural enzyme's plastic﹣eating abilities work faster and better．
John McGeehan， one of the lead researchers， said， "We've made an improved enzyme． It's better
than he natural one． And we are trying to make more improvements to it． "He went on， "The enzyme is not harmful to humans or animals， and it is friendly to the environment． So we are considering putting it into wider use．"
The team is now trying to make the enzyme break down PET in large quantities（大量地）．"We'll see that the plastic pollution may be stopped with this technology． However， there is still a long way to go，"John McGeehan added．
（1）According to the scientists， the enzyme may solve the problem of pollution．
| A． |
air |
| B． |
water |
| C． |
light |
| D． |
plastic |
（2）The underlined phrase "break down" in the passage probably means " " in Chinese．
| A． |
实验 |
| B． |
生产 |
| C． |
发明 |
| D． |
分解 |
（3）Researchers discovered that a natural enzyme helped eat plastics ．
| A． |
in Britain |
| B． |
in the US |
| C． |
in Japan |
| D． |
in China |
（4）Which of the following is TRUE according to the passage ？
| A． |
The scientists are still trying to improve the enzyme． |
| B． |
The enzyme will pollute large areas of land and water． |
| C． |
The natural enzyme works better than the improved one． |
| D． |
The natural enzyme is harmful to humans and animals． |
Mr. Brown was on his way home from the railway station. It was very late, and he was alone on the dark road. Suddenly he heard someone behind him. He began to walk faster. The man behind him walked faster, too. He walked more slowly, and the man moved more slowly, too. He began to run, and the man was following him and he was really scared.
There was a wall on one side of the road, and he quickly climbed up on it and jumped down on the other side. "If he passes and doesn't stop," Mr. Brown thought, "everything will be all right." But the man didn't pass. He climbed up on the wall and jumped down, too. Mr. Brown's only thought was, "I'm in great danger!" He stood up and shouted, "What do you want? Why are you following me?"
The man was so tired that at first it was difficult for him to speak. "I didn't know that you were a very good runner," he said at last, "I have to go to Mr. White's house, but I don't know the way. A man at the station told me that you lived next to Mr. White's and he told me to follow you. I'm too tired to go any farther."Mr. Brown was really_______.
| A．in great danger | B．a policeman | C．afraid of the man | D．too tired to move |
The man followed Mr. Brown because_______.
| A．he wanted to scare Mr. Brown |
| B．he wanted to get some money from Mr. Brown |
| C．Mr. Brown lived next to Mr. White |
| D．Mr. Brown was one of his good friends |
Which is wrong?
| A．There were few people on the road. |
| B．The man didn't know where Mr. White lived. |
| C．Mr. Brown thought he was in great danger. |
| D．Mr. Brown didn't know where Mr. White lived |
You may know the English letters A,B and C. But do you know there are people called ABC? You may like eating bananas. But did you know there is such a thing as a "banana person" "How strange! Are these people from "another earth"? No. They are just Chinese people like you and me.
ABC means American-born Chinese. An ABC is a Chinese, but was born in the United States. Sometimes, people call an ABC a "banana person". A banana is yellow outside and white inside. So, when a person is a banana, he or she is white inside - thinking like a Westerner and yellow outside - looking like a Chinese.
Do you know why? Usually, ABCs know little about China or the Chinese language. Some of them don't speak Chinese. But if ABCs cannot speak Chinese, can we still call them Chinese people? Yes, of course. They are Chinese. They are overseas Chinese. These people may be citizens of another country like the US, Canada or Singapore. But they have Chinese blood, Their parents, grandparents or even great-grandparents were from China They all have black eyes and black hair.
But they are not Chinese citizens. They are not people of the PRC. For example, we all know the famous scientist C. N. Yang (杨振宁). He got the Nobel Prize for Physics in 1957. Chinese people love him. But he is an American citizen."ABC" in this passage means"_______ ".
| A．three English letters | B．a kind of banana |
| C．Chinese born in America | D．Americans born in China |
Chinese in Western countries are called "banana persons" because_______.
| A．their bodies are white inside but yellow outside |
| B．they think like Westerners but look like Chinese |
| C．they were born in China but go to study in America |
| D．they like to eat bananas |
The underlined word "blood" may probably mean_______.
| A．国籍 | B．血统 | C．爱心 | D．皮肤 |
This passage mainly talks about_______.
A. different kinds of bananas B. overseas Chinese
C. the Nobel Prize D. the life story of C. N. Yang
John sent for a doctor because his wife was ill. He called the doctor and made sure they would meet at five. He arrived at the doctor's at twenty to five. He thought, "It's a little bit earlier. I'll wait for a moment. It's good to keep the time."
Then he stopped his car in front of the doctor's. He looked around and saw a noisy square not far from here. He went there and sat down on a chair to enjoy the last light of afternoon sun and make himself quiet. He saw some children playing and some women talking to each other happily.
Suddenly he heard a girl crying. He came up to her and asked some questions. Then he knew she got lost. John tried to find out her address and took her home. The girl's parents were very thankful.
Then John hurried to the doctor's. The doctor said angrily when he saw him, "You're late. Why did you keep me waiting for twenty minutes?" John said nothing but one word-"Sorry!"John went to the square to _____.
| A．spend the time | B．enjoy himself |
| C．see the children and the women | D．help the girl |
The girl cried because _____.
| A．someone hit her | B．she fell off her bike |
| C．her parents were angry with her | D．she didn't find the way home |
At last John got to the doctor's at _____.
| A．twenty to five | B．twenty past five | C．five o'clock | D．forty past five |
Marc sat next to me when we were in Hill Junior School. He had a serious in communicating with people. One always had to guess what he was saying. , most of my classmates did not like to be with him because his hands and shirts were always . I tried to let him know the importance of being clean by him several times a day to wash his hands. But he just could not understand.
One day, our teacher Miss West walked up to Marc. saying anything, she took Marc to the washroom. Slowly, Miss West washed his and told him that he should keep himself clean. She did that every day for one month. , Marc understood.
Miss West's love has given me a good example to follow when I my job. I always remember to teach my students by showing them the right to do things. And most important of all, I always remember to give them to learn and to grow up.
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