People often say that the earth is like our mother. She gives life to all the living things on the earth an...

题型：阅读选择题类：常考题难易度：普通

    People often say that the earth is like our mother. She gives life to all the living things on the earth and provides us with air, food, water and other essential things we need for living.
    Once she was beautiful and rich, but now she becomes dirtier and dirtier, poorer and poorer. It is due to what we have done to her. Please have a good look at her: polluted rivers and lakes, growing deserts, the destruction of the forests and wild life, and the depletion (消耗，用尽) of the ozone layer (臭氧层).
    Can she bear to see her children putting the waste here and there? Can she bear to see her children cutting down the trees and destroying the grassland, to see the acid rain destroying everything? Can we bear to see our mother suffering (受苦) so much? Isn't it time for us to ask ourselves whether this is the way to treat our mother?
    Floods, droughts, acid rain..., these are the punishments (惩罚) from nature. Everyone should know that there is only one earth. If we go on treating her like this, it won't be fit for us to live in any longer. It's time for us to love her, take good care of her and cure her. We should save the earth so as to save ourselves.

（1）、What does the earth look like now?

A、It has clean rivers, lakes and green forests. B、It is like a beautiful girl. C、It is more beautiful and richer. D、It is dirtier and dirtier, poorer and poorer.

（2）、What is the meaning of the underlined word?

A、Know B、Stand C、Imagine D、Hear

（3）、What is the best title of the passage?

A、The earth—our mother B、Defenders of the Earth (地球卫士) C、The earth is very beautiful and healthy D、The water on the earth is very clean.

举一反三

   Fire can help people in many ways. But can also be very harmful. Fire can heat water warm your houses, give light, and cook food. But fire can burn things too. It can burn trees, houses, animals, or people. Sometimes big fires can burn forests.
    Nobody knows for sure how people began to use fire. But there are many interesting, old stories about the first time a man or woman started a fire. One story from Australia tells about a man very, very long time ago. He went up to the sun by a rope and brought fire down.
Today people know how to make a fire with matches. Children sometimes like to play with them. But matches can be very dangerous. One match can burn a piece of paper, and then it might burn a house. A small fire can become a big fire very fast.
   Fires kill many people every year. So you must be careful with matches. You should also learn to put out fires. Fires need oxygen. Without oxygen they die. There is oxygen in the air. Cover a fire with water, sand, or in an emergency, with your coat or something else. This keeps the air away from a fire and kills it.
   Be careful with fire, and it will help you. Be careless with fire, and it will burn you.

    Many of us don't pay attention to the importance of eye care. It's said that if you take care of your body, then you can be healthy. That is why our eyes should be given a lot of care. Natural eye care should be put in a number one place.
    There are several causes leading to poor eyesight like not enough food, gene(基因) and aging(年龄增长). Televisions, computers and reading are also the causes of having poor eyesight.
    If you happen to work in front of the computer, it is best to take a rest every once in a while. Something dirty can cause redness and they will make you feel uncomfortable. It is bad for your eyes, too. If this happens, the best way is to clean your eyes by using cold water. You must also try your best to protect your eyes from harmful thing. For example, sunglasses are not just fashion but they can also serve as a great way to protect your eyesight from UV rays.
    Eating healthy foods will do good to your eyesight. Remember that vitamins(维生素) A、C and E are good for eyes. Try to eat food groups that have these vitamins. And you should do eye exercises because exercise protects your eyesight, too. If a person exercises regularly(规律地) and eats the right kind of food, his eyes will stay in good condition for a long time.
    All above are natural ways of eye care that help us keep healthy eyes. Being happy all the time can be helpful to a person's eyesight, too. In a word, eye care is very important, no matter how old a person is.

根据短文内容，完成表格。

Do you often think of life in the future? Will we study at home? Will we have robots? Will we fly to the moon easily? Everyone may have his or her views about that. Life in the future will be very different from life today. Between then and now many changes will take place, but what will the changes be?

There will be changes in our food. Maybe no one will eat meat. Instead, people will eat more fruit and vegetables. People will stay away from junk food. Maybe people will be healthier.

Computers will be small and useful. Maybe we will even put the computers into our pockets(口袋). There will be at least two computers in every home. And computer studies will be one of the most important subjects at school.

Work in the future will be different, too. Dangerous and hard work can be done by robots. People will work fewer hours than they do now. And they will have more free time for sports, watching TV and traveling.

Life in the Future
Food	● People will eat more healthy food.
	● People will stay away from {#blank#}1{#/blank#} .
Computers	● Computers will be small. We will even put the computers {#blank#}2{#/blank#} .
	● There will be at least two computers in every home.
	● Computer studies will be important.
{#blank#}3{#/blank#}	● Robots will do {#blank#}4{#/blank#} work.
	● People will have enough free time to {#blank#}5{#/blank#} , watch TV and travel.

阅读理解

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 down PET, 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 the naturl 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(大量的). "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.

听对话，回答问题。

根据你所听到的短文内容，从A、B、C三个选项中选出正确答案。

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