题目
题型：不详难度：来源：
| 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. |
答案
小题1:C
小题2:B
小题3:C
小题4:B
小题5:A
解析
试题分析：这篇短文中给我们介绍了三个新的发明，这些交通方式都有利于环境，不会造成污染，这样就可以使我们的城市更绿，更适合人们居住。
小题1:细节理解题。根据短文第一段中A green city is a healthy and pleasant place for people to live in.可知，一个绿色的城市是一个可以让人们居住的，健康的，令人愉快的地方。由此可知选C。
小题2:推理判断题。根据短文第二段中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可知，这个高级地铁的时速是962公里，而从洛杉矶到旧金山只需花费35分钟的时间，由此我们可以计算出，两地的距离大约是560公里。故选B。
小题3:推理判断题。根据短文第三段中And the motor allows bikes to travel up to 50km once可知A的说法是正确的；根据This invention can easily fit onto almost any bike可知B是正确的；根据It can be controlled through your smartphone’s Bluetooth可知D是正确的；根据Smart Wheel is a bicycle wheel with a motor可知C不符合文意。故选C。
小题4:细节理解题。根据最后一段短语中It is covered with solar panels that can provide energy可知，这个太阳能步道覆盖了太阳能帆板，可以用来发电。故选B。
小题5:主旨大意题。根据这篇短文中的三个介绍可知，这些公共交通方式都对环境是有利的，不会造成污染，而且这三个新的发明都很现代。故应该选A。
核心考点
试题【We humans live in different parts of the world, but we have the same “mother”. S】；主要考察你对科普环保类等知识点的理解。[详细]
举一反三
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
Canada is a big country with six time zones. In the west, it is four a.m., and everyone is asleep, but in Halifax on the east coast it is eight o"clock and people are having breakfast. It is a cold Friday morning in November, and the temperature is ten degrees below zero Centigrade(度).
Argentina 9:00 a.m.
In Buenos Aires, the capital of Argentina, it is nine a.m. on a warm summer morning, and people are starting work or school. November is a summer month in Argentina because it is in the southern hemisphere(半球).
Scotland 12:00 noon
Scotland is part of the United Kingdom. The capital of Scotland is Edinburgh, and the capital of the UK is London. It is twelve noon, or midday, in Edinburgh. Children are having lessons, but they are looking forward to the weekend because there is no school on Saturday and Sunday.
Egypt 2:00 p.m.
Friday is already the weekend in Egypt. Friday is a special day for Muslims, so schools, offices and shops are closed in all Arab countries. So now, at two p.m., most people in Egypt are having lunch with their families.
Japan 9:00 p.m.
Japan is seven hours ahead of Egypt, so it is already Friday evening there. The weekend is beginning. Most people are out with friends or watching television or playing computer games.
New Zealand 12:00 midnight
It is late on Friday night, so most people are asleep. Now Saturday morning is arriving. It is morning in Canada too, but that is Friday morning!
小题1:In eastern Canada, the time is ______ than that in western Canada.
A. four and a half hours later B. four hours earlier C. three hours earlier
小题2:While Canadian children in Halifax are having breakfast, Argentinean children are ______.
A. sleeping B. going home C. having classes
小题3:It’s midday in the capital of ______ when it’s 9:00 a.m. in the capital of Argentina.
A. Japan B. Scotland C. New Zealand
小题4:Now it’s 2:00 p.m. and you are in Egypt. It’s ______ for you to call a friend in New Zealand.
A. impolite B. polite C. normal
小题5:If it’s 11:15 p.m. in Japan, it’s ______ in New Zealand.
A. 2:15 a.m. B. 2:15 p.m. C. 1:15 p.m.
You probably know how to ride a bike safely. Now learn to use a computer safely.
Your eyes
Too much light can injure your eyes, so never sit too close to a computer screen. Your eyes should be at least 50cm from the screen. Remember to look away from it sometimes. This gives your eyes a rest.
When you use a computer, the window should be on your left or your right. If it is behind you, the light will reflect(反射) on the screen. If the window is in front of you, the sun and the screen will both shine into your eyes.
Your hands and wrists(手腕)
Hand and wrist injuries can happen because the hands and wrists are moved in the same way hundreds of times. If you use a keyboard for a long time, follow these rules: ①Rest your wrists on something. ②Keep your elbows at the same height as the keyboard. ③Stop sometimes and exercise your hands, wrists and fingers in a different way.
Your back
Some people sit for many hours in front of a computer. If you sit in the wrong way, you can injure your back or your neck. So you should sit with your back straight. The top part of the screen should be in front of your eyes. Your forearms, wrists, hands and the upper part of your legs should all the parallel (平行) to the floor. If you are sitting for a long time, get up every 30 minutes and exercise your arms, legs and neck.
小题1:A computer screen may injure your eyes if __________.
A. you sit 60cm away
B. your eyes are too close to it
C. the window is on your left or right
小题2:Hand and wrist injuries are caused when you __________.
A. move in the same way again and again
B. rest your wrists on something
C. keep your elbows as high as the keyboard
小题3:When using a computer, your eyes and hands will be safe if you __________.
A. work near a window
B. work for a long time
C. take rests at times
小题4:It is good for your back and neck if you sit __________.
A. for many hours
B. in the right way
C. with the screen below your eyes
小题5:What would be the best title for the text?
A. How to Use a Computer Safely
B. How to Keep your Hands and Wrists Safe
C. How to Protect your Eyes and your Back
But things are changing. High costs, unusual educational needs and long start-up times are no longer an obstacle(障碍) to space exploration. The scientists have developed a new type of tiny, inexpensive earth-orbiting(轨道) satellite.
So far, college students have built and launched(发射) several cube-shaped satellites, or CubeSats. At least 15 more are ready to go. Those already in orbit take pictures, collect information and send it back to the earth, just as regular satellites do.
But you might not even have to wait until you get to college to start designing and building your own satellite. A new program called KatySat aims to get teenagers to take part in. When kids understand what satellites can do, the kinds of ideas they’ll come up with may be countless.
Education isn’t the only aim of CubeSats because these tiny, technology-filled boxes are inexpensive to build and can be put together quickly, they’re perfect for testing new technologies that might one day be used on major space tasks.
The biggest challenge now is to find ways to bring the satellites back to the earth after a year or two. Or space junk could gradually increase because CubeSats become more popular.
Nowadays, college and high school students are getting a chance to learn what it takes to explore in space. Someday—perhaps a lot sooner that you imaging—you might get to design, build and launch your own satellite. If you do, you’re sure to have fun. And you might also get crazy about science for life.
小题1:Building a traditional satellite __________.
A. costs $250,000
B. needs college students
C. takes quite a long time
小题2:Compared with the traditional ones, the new satellites __________.
A. need long start-up times
B. are cheap and small-sized
C. collect more junk in orbit
小题3:The underlined word “countless” in Paragraph 4 probably means “__________”.
A. 无用的 B. 无价值的 C. 无数的
小题4:According to the passage, which of the following is true?
A. CubeSats could possibly cause pollution in space.
B. Scientists designed CubeSats for kids to play with.
C. Students can’t design satellites without college education.
小题5:The purpose of the author writing the passage is __________.
A. to tell us that satellite technology can also be learned by kids
B. to show that high technology brings a big change in kids’ life
C. to tell us that kids must study hard to learn satellite technology
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