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题型:阅读选择 题类:常考题 难易度:普通

   Germs(细菌) are everywhere. You can't see them, but they are on your desk, on your computer, and even in the air!
   Like people, germs move around the world. They fly with us on planes. When food, clothes, and other things travel around the world, germs travel, too. Some germs are safe, but some are dangerous. Germs cause illnesses like colds and the flu.
   Warmer Weather Brings Germs  
   The world's weather is changing. Cooler countries are getting warmer, so insects from hot countries can move there. Some of these insects, like mosquitoes, carry dangerous germs. These germs cause headaches, fever, and can even kill people.
   Under Your Skin
   Your skin protects you from germs. It stops some germs, but not all. They can enter your body when you eat, or when you have a cut. Germs are on your hands, too. They enter your body when you touch your eyes, nose, or mouth.
   Fighting Germs
   Your immune system(免疫系统) protects you, too. When germs get inside your body, your immune system finds and kills them. Special cells(细胞) move around your body and fight germs. They help you stay healthy. Other cells make antibodies(抗体). Antibodies help your body find and stop germs.
   What can you do to fight germs? You should wash your hands with soap and water. Soap kills many germs, and water washes them away.

(1)、According to the text, insects ______.

A、kill germs    B、carry germs  C、protect germs
(2)、The underlined word “there” refers to ______.

A、cooler countries   B、hot countries C、the world
(3)、Which of the following is right according to the text?

A、All germs are dangerous. B、There are more germs in cold places. C、Germs can get into your body.
(4)、What do antibodies do?

A、They get inside your body and kill your immune system.   B、They carry dangerous germs. C、They help protect us from germs.  
(5)、Which can be the best title for this text?

A、Germs Are Everywhere B、Weather Is Changing  C、Skin Stops Germs
举一反三
阅读理解,请阅读材料,根据其内容从A.B.C三个选项中选择最正确的答案填空。

There is little rain in desert. Because deserts are so dry, they have no "quilt" to help stop the soil from going away. As a result, they may get very hot during the day with the sun shining, but don't hold the heat overnight. Many deserts can quickly get cold once the sun goes down. Some deserts can reach temperatures of over 100 degrees F during the day and then drop below freezing (32 degrees F) during the night.

The largest hot and dry desert in the world is the Sahara Desert in Northern Africa. The Sahara is a sandy desert with great sand hills. It covers over 3 million square miles of Africa. Other large deserts include the Arabian Desert in the Middle East, the Gobi Desert in Northern China and Mongolia, and Kalahari Desert in Africa.

Animals that live in the desert are also used to needing little water. Many get all the water they need from the food they eat. Other animals keep water that they can use later. The camel stores up fat in its hump while other animals keep something they need in their tails.

Only certain types of plants can live in the terrible environment of the desert. You won't see a lot of tall trees in the desert. Most plants have a way to keep water in their leaves, or trunks so they can live a long time without water.

Now deserts cover around 20% of the world's land, but they are growing. This is called desertification and is caused by different reasons including human activities. The Sahara Desert is growing larger and larger each year. What should we do with it ?


阅读理解

    Sometimes people call each other “scared-cat”, but have you ever thought about this expression? When a cat is frightened, its heart starts beating faster, its muscles get tense (紧张的), and there are changes in the chemicals in its bloodstream. Although the cat doesn't realize this, its body is getting ready for action. If the danger continues, the animal will do one of two things. It will protect itself, or it will run away as fast as it can.

    Something like this also happens to people. When we are excited, angry or scared by other feelings, our bodies go through many physical changes. Our hearts beat faster, and our muscles get tense. All of these changes make us more alert and ready to react. We, too, get ready to defend ourselves or run.

   Human beings, however, have a problem that animals never face. If we give way to our feelings and let them take over, we can get into trouble. Have you ever said something in anger — or hit somebody — and regretted it later? Have you ever shouted at a teacher, told somebody you were lonely, or said you were in love, and then wished later you had kept your mouth shut? It isn't always clever to express your feelings freely.

    Does this mean that it's smarter always to hide (藏) our feelings? No! If you keep feelings of anger, sadness hidden away or bottled up inside, your body stays tense. Physical illness can develop. It can actually be bad for your health. (It isn't good to keep pleasant feelings inside either; all feelings need to be expressed.)

    Feelings that you keep all bottled up inside don't just go away. It's as if you bought some bananas and stuck them in a cupboard. You might not be able to see them, but before long you'd smell them. And if you opened the cupboard, chances are you'd see little fruit flies flying all over them. They'd be rotten (腐烂).

    You can try to treat feelings as if they were bananas in the cupboard. You can hide them and you can pretend they don't exist, but they'll still be around. And at last you'll have to deal with them, just like those bananas.

阅读理解

①Millions of people around the world cook their food on fire every day.People must spend lots of money on cooking fuel.However,there is a much easier and cheaper way to cook using energy from the sun.

②Solar cookers have been used for centuries.A Swiss scientist made the first solar cooker in 1777.Today,people are using solar cookers in many countries around the world.People use them to cook food and to heat drinking water.

③There are three kinds of solar cookers.The first is a box cooker.It is designed with a special wall that collects sunshine into the box.A box cooker is good for slow cooking of a lot of food.

④The second kind of solar cooker is a panel cooker.It has several flat walls that collect the sunshine onto the food.People can build panel cookers quickly.They do not cost much.In Kenya,for example,panel cookers cost just two dollars.

⑤The third kind of solar cooker is a parabolic(抛物线的) cooker.It has rounded walls that collect sunlight into the bottom of the cooker.Food is cooked quickly in parabolic cookers.However,these cookers are hard to make.They must be moved again and again to follow the sun.Parabolic cookers can also cause burns and eye injuries if they are not used correctly.

⑥You can make solar cookers from boxes or heavy paper.They will not catch fire.Paper burns at 232℃.A solar cooker never gets hotter than that.Solar cookers cook food at low temperatures over long time.This allows people to cook food and do other things at the same time.

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