题目
题型:不详难度:来源:
Earth Day is April 22. But on all other days, we must also remember it. The water we use is the most important natural resource(自然资源)on the earth.
Water covers 70 perent of the earth’s surface (表面). But most of that is sea water. We can’t use it for very many things. Fresh water covers only one percent of the earth’s surface.
You probably feel lucky that your life isn’t as hard as Napoga’s . But that doesn’t mean you don’t have to worry about water. We all face serious water problems. One of them is water pollution. All kinds of things from cars, factories, farms and homes make our rivers , lakes , and oceans dirty. Polluted water is very bad for people to drink. And dirty water is bad for fish , too. Now, thirty-four percent of all kinds of fish are dying out.
How do cars and factories make our water dirty? First, they pollute the air. Then , when it rains, the rain water comes down and makes our drinking water dirty. Dirty rain, called acid rain(酸雨), is also bad for plants ,animals and buildings.
Scientists say that in 30 years, more than half of the people in the world won’t have enough clean water. We have to learn how to save more water for ourselves and our children. Here is some advice for saving water:
● Turn off the water while you brush your teeth. You can save as much as 450liters(升)each month.
● Leaky taps (漏水的龙头)waste a lot of water. Fix them right away.
●You can easily cut your 10—minute showers in half---and you’ll be just as clean.
●When you wash dishes, don’t let the water run.
●Only wash clothes when you have a lot to wash. If your washing machine isn’t full , you are wasting water!
根据材料内容,选择最佳答案,并将其标号填入题前括号内。
小题1:Every morning Napoga went to get clean water _________.
A.before she went to school |
B.after she finished school |
C.without going to school |
D.after she played with her friends |
sea water is more widely used than fresh water
B.there is very little water for our living
C.there is 71 percent of fresh water
D.we don’t need to worry about water
小题3:Acid rain____________________________.
A.is only bad for living things. |
B.can be produced in factories |
C.doesn’t do harm to people , but it’s bad for plants, animals and buildings. |
D.doesn’t just do harm to human beings but to animals, plants and buildings. |
A.We need ten minutes if we want a clean shower. |
B.We should put in enough clothes when we wash them in washing machines. |
C.You can keep yourself clean by having a shower for five minutes. |
D.Don’t let the water run when we brush our teeth and wash dishes. |
A.Something must be done to prevent water from being polluted. |
B.Clean water means much to human beings and living things around us. |
C.It’s time to take care of the water we use. |
D.Water is the most important natural resource on the earth. |
答案
小题1:C
小题2:B
小题3:D
小题4:A
小题5:C
解析
试题分析:短文大意:这篇短文主要讲述了地球上的水资源短缺问题,告诉我们应该行动起来节约用水,并就此提出了几点建议.
小题1:段落大意题。根据短文第一段描述,可知Napoga 每天早晨都去打水,因此没有时间去学校了。故选C。
小题2:段落大意题。根据短文第三段描述,可知地球上可用来生存的水资源很少。故选B。
小题3:细节理解题。故短文第五段Dirty rain, called acid rain(酸雨), is also bad for plants ,animals and buildings.描述,可知酸雨不但对人类有危害,而且对动物,指物和建筑物都有危害。故选D。
小题4:细节理解题。根据You can easily cut your 10—minute showers in half---and you’ll be just as clean.描述,可知洗淋浴用10分钟是一种浪费水的行为。故选A。
小题5:主旨大意题。阅读短文可知,本文主要讲述了地球上的水资源短缺的问题,号召我们行动起来保护水资源。故选C。
核心考点
试题【 Napoga is a 12—year---old girl in Ghana, Africa. It is hard for her family t】;主要考察你对科普环保类等知识点的理解。[详细]
举一反三
小题1:____________________Find out how much time you need to spend on each subject every week, and figure out from your teachers when the homework is due, and then make a schedule. According to the schedule, you are able to make a study pan.
小题2:_________________.Most teachers base grades on homework, and it’s easier to keep up with your assignments(作业) than it is to dig yourself out of a hole.
小题3:_________________Your teachers may have suggestions about what you can do to learn more and improve what you can’t. But you have to ask!
小题4:___________________When you get a bad grade, you probably get angry and sad. That’s normal, but you should also use the experience to try to figure out what went wrong so you can avoid the same mistake in the future.
Study with your friends. Sometimes it’s hard to get started on homework, so you may meet with one or two friends to do your work. But this won’t work if you and your friends decide to watch TV or play video games instead of doing your homework!
A. Do your homework. B. Create a study plan. C. Learn from your mistakes. D. Talk to your teachers. |
A.How to learn from others. | B.How to try tips. |
C.How to do your homework | D.How to get good grades |
Typhoons are some of the worst storms, usually around the Pacific Ocean and the South China Sea. Most happen in July, August and September.
How does a typhoon happen? When lots of sea water gets hot in the summer sun, it evaporates into the air. This makes the air hotter. When the air gets warm enough, it starts to move higher up into the sky. Then, cooler air around it rushes in. It fills the space that is left. After the air gets warmer, it starts to move quickly, making wind. The wind goes in circles, and it keeps moving higher in the sky. The warmer the air gets, the quicker the wind moves. And when the wind moves faster than 30 meters a second, a typhoon begins.
A typhoon has two parts, One is called the “eye”. In the eye, the wind does not move so fast. The other part is the wall of clouds around the eye. This is where the strongest with and hardest rains are.
Typhoons are very dangerous. In 2004, Typhoon Yunna killed 164 people in Zhejiang, and 24 people were missing. In May 2006, Typhoon Pearl hit Guangdong and Fujian, and thousands of houses were damaged.
What to do when a typhoon hits:
Stay inside, Close all the windows and stay away from them.
Try to bring all of your things inside. Strong winds could even blow away your bikes!
Listen to the radio or TV for important information.
If you’re told to go to a safer place, do so right away.
小题1: Typhoons often happen
A.in the hot season | B.in the cold season |
C.only in China | D.under the sea |
小题3: When a typhoon comes, we cannot
A.close all the windows | B.listen to typhoon news |
C.stay outside with our bikes | D.stay inside the strong house |
A.the knowledge of typhoon | B.the eye of a typhoon |
C.the most dangerous typhoon Yunna | D.the names of typhoon |
A.The warmer the air gets, the slower the wind moves. |
B.In 2006, Typhoon Peal killed 164 people in Zhejiang. |
C.The strongest winds and harder rains are in the eye of typhoon. |
D.A typhoon will happen when the wind goes faster than 30 meters a second. |
Is the sky blue? The sky has no color. We know that there is air around the world. When planes fly, they need air to lift their wings. Planes can’t fly very high because the air gets thinner when they go up higher. If we go up about 1,200 kilometers from the earth, we’ll find no air there.
When we talk about the sky, we usually mean the atmosphere around the earth. It is like a very thick “cover” over the earth and keeps it warm. Without the “cover”, the earth would be a very cold place and nothing could live on it.
Looking up above us, you will see the blue sky with white clouds. It is usually light blue, but the sky would be dark blue if you go to the top of the highest mountains. And you will see fewer clouds between you and the sun.
And if you sit in a spaceship high above the earth, there is no air at all. The sky would be so dark that its color would be black.
Sometimes the sky doesn’t look blue. When the sun rises and falls, you will see red, orange, and other colors in the sky. These are the most beautiful moments of the day.
Now you may understand that we see colors because the air scatters (散射) the sunlight. Light travels through the air. Without air, there would be no light and no colors.
小题1:Planes can’t fly very high because ____________.
A.there is air around the world |
B.the air gets thinner when they go up higher |
C.it’s warmer in the sky |
D.the air gets thicker when they go up higher |
A.the sun rises and falls every day |
B.the sky has lots of colors |
C.the air scatters the sunlight |
D.the sunlight has many colors |
A.There is little air without light and colors in the sky. |
B.The sky will look red, orange and other colors at noon. |
C.The sky has only one color when the sun rises and falls. |
D.The sky is dark blue if you go to the top of the highest mountains. |
The best time for reading is morning, because in the morning, the air is fresh and the mind is clear. For that reason, we can get good result.
In studying we must have patience. If we have not known a text well, we must read it again. We should not read the next one until we have learned the first one.
When we are studying, we must put our hearts into the book, or we can get nothing from the book while we are reading.
We must always ask “whys”. If it is not well understood, write it down and ask our teachers or our parents, or friends. In any possible way, we must know it completely and what we’ve learned can be used well and made better.
Though there are many ways for studying, yet the above mentioned will be quite enough if we can keep them in heart and do so.
根据短文内容回答下列问题。
小题1:What’s the main idea of the passage?
.
小题2:When is the best time to read?
__________________________________________.
小题3:How many ways for studying are mentioned in the passage?
.
小题4:Why must we always ask “whys” in our study?
.
Lead(铅)is very harmful for the human body and it is used in most hair dyes. Since the base of hair is the scalp(头皮),you may have allergic reaction(过敏反应).
While dyeing your hair it is important to take some safety measures. You can follow them even when you are applying(涂) dye on your hair at home.
• It is better to apply hair dye for a few minutes. If you leave your hair with dye, longer than the necessary time,then you may get some skin problems.
• Don"t forget to wear gloves while applying dye on the hair. This will protect the skin of your
hands.
• After applying hair dye it is important to wash your hair with water.
• Hair dyes are made of chemicals. If you mix different hair dyes ,there may be chemical reaction. So, It is not a good idea to mix different hair dyes at the same time.
• Finally all the bags of hair dyes carry the directions(说明书 ) Try to follow them very carefully. This will lower the chance of allergic reaction.
小题1:What do most hair dyes contain?
A.Iron | B.Silk. | C.Lead | D.Gold |
A.Beauty | B.Health. | C.Blackhair. | D.Colorfulhair. |
A.Dyewithchemicaldye. |
B.Mixdifferenthairdyesatthesametime. |
C.Leaveyourhairwithdyelonger. |
D.Doasthedirectionstellyou. |
A.amanwhooftendyeshishairmayhavecancer |
B.amanwhodoesn’tliketowashhairmayhavecancer |
C.leadisgoodforthehumanbody |
D.wemustn"tdyeourhair |
A.Howtodyeourhair. |
B.Dyeinghairisharmful. |
C.Tipsoilprotectingourhair. |
D.Makeourhairmorebeautiful. |
最新试题
- 1探究金属铁和铜的活动性关系,可以选择不同的药品,请完成下表方案一和方案二的实验原理是__________。
- 2下列气体不会造成大气污染的是( )A.二氧化硫B.氮气C.一氧化碳D.一氧化氮
- 3近年来,出版了大量与蒋介石有关的书籍,如《蒋介石传》、《蒋介石与汪清卫》、《蒋介石与莫斯科的恩恩怨怨》、《蒋介石日记揭秘
- 4人体主要的呼吸肌有( )A.胸肌和腹肌B.肋间内肌和胸肌C.肋间外肌和腹肌D.肋间外肌和膈肌
- 5为了解初三学生的视力情况,某校随机抽取50名学生进行视力检查,结果如下:视力4.6以下4.64.74.84.95.05.
- 6如图是探究铁制品锈蚀的条件时做的五个实验(铁钉在不同环境中),实验一段时间后,得出的结论错误的是( )A.丁中铁钉生锈
- 7如果一个有理数的绝对值是4,那么在数轴上表示这个数的点位于原点的( )A.左边B.右边C.左边或者右边D.以上都不正确
- 8下列物质均能使红墨水褪色,其中没有发生化学反应的是A.活性炭B.氯气、C.漂白粉D.酸性的NaClO溶液
- 92007年1月8日,中共中央***、***、中央军委主席胡锦涛向获得2007年度国家最高科学技术奖的中国科学院院士闵恩
- 10阅读理解。Read the following six advertisements and answer the qu
热门考点
- 1在历史上,拜占廷帝国指的是[ ]A.东罗马帝国B.西罗马帝国C.亚历山大帝国D.土耳其帝国
- 2There _____ some CDs on the shelf. [ ]A. isB. are C. hav
- 3一种“答题捐大米”的爱心活动在网络上悄然流行。用户每答对一题即可获赠10粒或20粒大米。这些大米将由网站委托红十字会等慈
- 4已知圆锥的底面半径为2,侧面积为8π,则该圆锥的侧面展开图的母线长为( )A. 8B.C.2 D. 4
- 5A,B,C是相邻的3种元素,A,B同周期,B,C同主族,且3种元素的质子数总和为30,写出这3种元素的名称_______
- 6“最后一分钟协议”是国际谈判桌上经常看到的现象。对这一现象的正确理解有:①协议的背后是各自的国家利益 ②共同利益是协
- 7已知镓和铝在周期表中位于同一纵行,氮化镓可把手机信号扩大10倍,让电脑的速度提高1万倍,将CD缩减到1英寸……,下列有关
- 8阅读下文,完成文后各题。看见的人报告说,河里面上午就泊了一只白篷船,篷是全盖起来的,不知道什么人在里面,但事前也没有人去
- 9.若方程(m+1)x=2的解是 x = 1,则m= ;
- 10如果三角形的两边长分别为3和5,第三边长是偶数,则第三边长可以是[ ]A.2 B.3 C.4 D.8