题目
题型:不详难度:来源:
All living things depend on the sun for their growth. Plants need light and heat to grow. They use the light from the sun to make food. But we human beings cannot make food by our own bodies from the sun. All the food we eat comes from plants in a food chain(链) . And the food chain starts with the sun . For example.
sun —→ potatoes —→ chips
sun —→ corn —→ hens —→ eggs
sun—→ wheat —→ bread
Animals need sunlight, too. Just like us, their food comes from plants in food chain, which begins with the sun. For example,
Sun → leaf → caterpilllar(毛虫) → bird
Sun → seaweed(海藻) → small fish → whale(鲸)
With the help of sunlight, we can see things during the day. Even when the sky is cloudy, the sunlight is very strong and it shines through the clouds. If there was no sun, it would be dark all the time.
小题1:The sun is a star.
A. huge, cold and bright B. huge, hot and bright C. small, warm and bright
小题2:What are the two main things the sun gives us?
A. Light and heat. B. Heat and eggs. C. Corn and light.
小题3:From the passage we learn that .
A. when the sky is cloudy, there is no sunlight at all
B. without the sun there will be no life on the earth
C. we human beings can make food by our own bodies
小题4:All the food we eat comes from in a food chain. And the food chain stars with the .
A. plants; earth B. plants; sun C. animals; star
小题5:Which is the best title (标题) for this passage?
A. Plants need heat and light to grow
B. All living things depend on the sun for their growth
C. The sun is very important
答案
小题1:B
小题2:A
小题3:B
小题4:B
小题5:C
解析
试题分析:文章介绍给我们太阳的重要性,太阳给我们带来光明和热量,没有太阳就没有地球上的所有生物,所有的生物链都是以太阳起始的。
小题1:细节理解题。根据原文The sun is a huge, hot and bright star.可知太阳是一个巨大,炎热,明亮的星球。故选B。
小题2:细节理解题。根据原文The sun gives us light and heat.太阳给我们光和热量。故选A。
小题3:细节理解题。根据原文It is important because without it there would be no life on the earth.可知没有太阳就没有地球上的生命。故选B。
小题4:细节理解题。根据原文All the food we eat comes from plants in a food chain(链) . And the food chain starts with the sun .可知我们吃的所有食物都来自食物链里的植物,食物链都是以太阳开始的。故选B。
小题5:细节理解题。通过阅读可知,本文讲述的是太阳的重要性。故选C。
核心考点
试题【The sun is a huge, hot and bright star. It is important because without it there】;主要考察你对科普环保类等知识点的理解。[详细]
举一反三
The earth will perhaps be warmer by about 7 degrees centigrade. At the South Pole and the North Pole, the ice will melt (融化). The sea level (海平面) will rise by about 7meters. As a result, water will cover cities like London, Tokyo and New York. Some ports and towns along the coasts will disappear under water.
Some other scientists think that the dust, smoke and pollution from coal, wood and oil fires will block out the sunrays(紫外线). Then the earth will become colder and great sheets of ice will cover Europe and North America.
When chemicals in the air mix with rain, we have acid (酸) rain. Acid rain can bring us great harm. It destroys forests and kills life in lakes and rivers.
People are beginning to see how serious the problem is. They find it important to work with nature instead of against it. They are trying to save the earth in many different ways. But one of the most important things to do is to make people understand that saving the earth is saving ourselves.
小题1:Some scientists believe that .
A. the earth is growing warmer
B. we can find oil in our forests
C. we have to burn down the forests every year
小题2:Ice at the poles will if the earth gets warmer.
A. cover cities like London and Tokyo
B. raise the sea level by 7 degrees
C. become water and make the sea level rise
小题3:Acid rain .
A. brings great changes in our climate
B. kills pests in lakes and forests
C. kills the fish in rivers and lakes
小题4:What can we learn from the third paragraph?
A. The dust together with pollution from coal, wood and oil fires will bring us more heat from the sun.
B. The sunrays will come more because of the dust and pollution from fires.
C. As a result of the dust and pollution from coal, wood and oil fires, the earth will become colder.
小题5:Which statement is TRUE?
A. People have come to know the importance of working with nature.
B. All the scientists agree that our earth is sure to become warmer and warmer.
C. The sea level will rise if the earth gets colder.
Not only exams but also other things, __ a big game, can also make you a bit__ from how you usually are.
You may be acting differently ___ you are stressed out. Stress is what you __ when you are worried or uncomfortable about something. Usually your hands get wet and your __ beats faster. You feel stressed because you might ask too much of yourself sometimes. Or, your parents, teachers or classmates put too much ____ on you. This can make you worried. But being stressed is not always a big ____. Everybody, even sports stars, can get a little worried before a big game.
Some kinds of stress are good. Good stress might show up when you’re called on in class or when you have to give a report. This kind of stress can__ you get things done. You may do a __ job in your book report if the anxiety pushes you to do more work before you read it to the class. Sometimes stress can turn into something ___ if you keep having stressful feeling over a long time. This kind of stress isn’t going to help you. It can make you ___. You may have trouble __ attention at school and forget things easily
So, remember to stay relaxed. It won’t be the __ of the world, even if you don’t pass the exam.
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The Hyperloop (超级高铁) The Hyperloop is a high-speed transportation. It works by having capsules (舱) with passengers in. The capsules run on the air. The Hyperloop plans to run from Los Angeles to San Francisco. With an average speed of 962 km per hour, it is only 35 minutes between the two cities. The solar panels (板) provide power to the Hyperloop. |
Smart Wheel Smart Wheel is a bicycle wheel with a motor. This invention can easily fit onto almost any bike. And the motor allows bikes to travel up to 50km once. Smart Wheel is different from other electric bikes. It can be controlled through your smartphone’s Bluetooth. The smartphone can show your speed, distance and travel time. |
Solar Sidewalk (太阳能步道) George Washington University made a special path in 2013. The path is about 9 square meters. It is covered with solar panels that can provide energy to power 450 LED lights. These lights can light the walkway after dark. The solar panel is also strong enough for people to walk on. |
A.clean and tidy | B.full of plants |
C.healthy and pleasant | D.rich for energy |
A.About 962 km. | B.About 560 km. |
C.About 700 km. | D.About 450 km. |
A.It can travel 50km once. |
B.It can fit onto almost any bike. |
C.It’s a motorbike with a bicycle wheel. |
D.The smartphone’s Bluetooth can control it. |
A.They can run on the air. | B.They can provide energy. |
C.They can carry passengers. | D.They can show your travel time. |
A.Modern and clean. | B.Green and dangerous. |
C.Exciting and crazy. | D.Expensive and impossible. |
Many tsunamis could be found before they hit land with the use of modern technology. If you see the water drawback (后退) quickly and unexpectedly from a beach, run toward higher ground or inland -- there may be a tsunami coming. Also, if you are on the beach and there is an earthquake, it may have caused a tsunami, so run toward higher ground or inland. The first wave in a tsunami is often not the largest; if you experience one unusually-huge wave, go inland quickly -- even bigger waves could be coming soon.
Do you know the story of the "angel(天使) of the beach"? Tilly, A 10-year-old English schoolgirl who saved the lives of hundreds of people in Phuket,Thailand in the Asian Tsunami of 2004 , by warning them a wall of water was about to strike(袭击), after learning about tsunamis in geography class. “Last term geography teacher Andrew Kearney taught us about earthquakes and how they can cause tsunamis,” Tilly said to the reporter.“I was on the beach and the water started to go funny. There were bubbles and the water went out all of a sudden. I recognised what was happening and had a feeling there was going to be a tsunami. I told mummy.”
小题1:An earthquake may cause a tsunami.
A. in the city B. in the country C. under the water
小题2:When the tsunami is coming, we should .
A. run towards the higher place or inland
B. run to the playground
C.run into a house
小题3:Tilly saved hundreds of people’s life in .
A. Japan B. Tailand C. the United Kingdom
小题4:Tilly recognised there would be a tsunami because .
A. her geography teacher told her.
B. she found the water drawback unusually quickly
C. she had a feeling about the earthquake
小题5:Which of the following statement is TRUE according to the passage?
A. The word “tsunami” is from Japanese because most recorded tsunamis in the world took place in Japan
B. Tsunami can only be found by modern technology before it hit the land.
C. Tsunami only happens in the Pacific Ocean
WHAT YOU’LL NEED:
★Soap ★Water ★Your hands
WHAT TO DO:
★Make sure your hands are dry.
★Rub your hands together until you feel the heat of your hands.
★Now, use soap and water to get your hands very slippery (滑的).
★Try to make friction happen while your hands are slippery.
★Please write down what has happened.
LET’S TALK!
Friction is an energy that happens when two things rub together. When friction happens, it makes heat! When your hands are slippery, they won’t make very much friction and your hands won’t get so hot.
DID YOU KNOW?
★Friction happens when you stop your fast running bike.
★Ancient people made fires by rubbing two pieces of wood together. Friction happened though they didn’t know it. ___ __? Friction is everywhere. Have you ever noticed situations where friction is happening? If not, ask your parents to take you out in a car. If it is not hot, touch the tires (轮胎) of the car before and after a short drive to see how much warmer they get from friction.
小题1:You’d better make your hands ______ to get heat when you rub them.
A. slippery B. dry C. wet
小题2:The word “friction” in the first paragraph means “______”.
A. 摩擦 B. 震动 C. 膨胀
小题3:We can know from the passage that it’s a ______ experiment.
A. physics B. chemistry C. biology
小题4:The topic of the last column (栏目) is ______
A. THINK IT OVER! B. WHAT HAPPENED? C. WORK WITH PARENTS.
小题5:The main idea of the passage is ______.
A. how to discover friction B. how to rub your hands C. how to make fires by rubbing
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