题目内容
Water can be a liquid, a solid or a gas. When it is a solid, it can be as hard as stone. When it is a liquid, it can run through your fingers. When it is a gas, you may not see or feel it.
Water can change from a solid to a liquid or to a gas easily. This is why we always have fresh water. Now let us find out how it does. The heat of the sun turns liquid water into gas from the oceans, seas, rivers and lakes. The heat also turns liquid water into gas from the ground, the plants and the animals. Water in the gas rises and turns into clouds in the air.
When the clouds come near a mountain, they rise high. As the clouds rise, they get cooler. The higher they rise, the cooler they become. Then more and more water gas turn into water drops. In this way, the drops of water in the clouds get bigger and bigger. Then they fall to the earth as rain.
根据短文内容,选择正确答案
【小题1】What is the solid of water?
A.Rain | B.Gas | C.Stone | D.Ice |
A.liquid | B.soild | C.gas | D.snow |
A.the wind | B.the heat of the sun |
C.the mountain | D.the earth |
A.seas | B.oceans | C.mountains | D.farms |
A.the cooler | B.the hotter | C.the heavier | D.the bigger |
【小题1】D
【小题2】C
【小题3】B
【小题4】C
【小题5】A
解析试题分析:这篇短文主要讲述了水的三种状态及其在自然界的循环过程。
【小题1】根据第一段When it is a solid, it can be as hard as stone. 描述,结合常识可知当水是固体时,它被叫做冰,故选D,冰。
【小题2】根据第一段When it is a gas, you may not see or feel it. 描述,可知选C。
【小题3】根据第二段The heat of the sun turns liquid water into gas from the oceans, seas, rivers and lakes. 描述,可知选B。
【小题4】根据短文最后一段描述,可知在山区降雨最多,故选C。
【小题5】根据最后一段The higher they rise, the cooler they become. 描述,可知位置越高,气温越低,故选A。
考点:关于水的说明文阅读
点评:本文浅显易懂,层次分明,学生很容易把握文章中心内容。答题中注意带着问题阅读短文,一般就能顺利找出答题依据。对于不能直接找到根据的问题注意联系上下文,根据短文中心总结出正确答案。
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Have you ever been ill? When you are ill, you must be unhappy because your body becomes hot, and there are pains all over your body. You don’t want to work, and you stay in bed, feeling very sad.
What makes us ill? It is germs(细菌). Germs are everywhere. They are very small and you can’t find them with your eyes, but you can see them with a microscope(显微镜). They are very very small and there could be hundreds of them on a very small thing.
Germs are always found in dirty water. When we look at dirty water under the microscope, we shall see them in it. So your father and mother will not let you drink dirty water.
Germs can be found not only in water but also in air and dust(灰尘). If you cut your finger, if some of the dust from the floor goes into the cut(割开处), some of the germs would go into your finger. Your finger would become big and red, and you will have much pain in it. Sometimes the germs would go into all of your body, and you would have pain everywhere.
【小题1】Which of the following is true?
A.If things are very very small, they are germs. |
B.If things can’t be seen, they must be germs. |
C.Germs are only in dirty water. |
D.Germs are everywhere around us. |
A.You haven’t looked at it carefully. |
B.Water can’t be drunk in this way. |
C.There must be lots of germs in it. |
D.Water will make you ill. |
A.Germs may make us ill. |
B.Germs are in dirty water. |
C.Don’t drink dirty water. |
D.Take care of your fingers. |
Dr.Jack Todd is very interested in clean water .__1._,so it's natural that he is to developer of a small and affordable system(系统)to clean waste water, His “Living Machine" can clean wastewater in your home or in your business.
__2._ The wastewater goes into a big plastic tank where bacteria(细菌)start to break down the waste.A few days later after it is dealt with, the water is brought into a greenhouse filled with plants and fish.With the help of sunlight, the plants and animals remove more chemicals from the water,making it cleaner,Then the water can be reused for washing or bathing _3.__ but the water is clean enough for watering the flowing, washing the dog, or even for bathing or swimming.
The advantage of this technology is that it is affordable and good for the environment. __4.__. It can help to use less fresh water, and it can help keep the water supply unpolluted.
If enough homes and businesses use “Living Machines” People like to plant trees around their houses He is also interested in saving money It cannot be used for drinking or cooking The “Living Machine” is a system for cleaning wastewater |