You’ve got your fancy new suitcase and you’re ready to take it with you on your travels across the globe.
You get to the airport, quickly moving through the crowds on the uneven pavement, rushing to check in. Then, your heart sinks when you realize your new suitcase has got a serious case of the wobbles (摇晃).
Why does this happen?
Scientists from the Universite Paris-Diderot in France investigated this matter and published their findings in the science journal Proceedings of the Royal Society A. They also suggested some solutions to overcome this modern-day problem.
To learn more about the issue, they put a suitcase on a treadmill (跑步机) and observed what happened.
It was soon noted that the “wobble” was actually a result of repeated actions that caused the suitcase to sway from side to side. They discovered that if one of the wheels encountered an obstacle such as a small bump, it jumped into the air for just a moment and then banged back down to the ground. That second action caused the opposite wheel to lift off the ground and then to bang back down, causing the first to lift again and so on. This swaying increased as the luggage was pulled along.
“The suitcase is a fun way to tackle the problem, but the study would be the same for any trolley with two wheels or blades (桨叶),” Sylvain Courrech du Pont, lead author of the study, told BBC News. “So it will be the same for a caravan (大篷车) or maybe also for airplanes.”
Instead of slowing down when we see a rocky part of the path, the scientists recommended doing the exact opposite and speeding up. This is because going faster gives the wheels less time to rise and fall, preventing the case from swaying. They also said that reducing the angle of the suitcase by lowering its handle to the ground would help keep it steady.
“These findings could help researchers simulate and design better rolling suitcases and other pulled trolleys, such as towed trailers ,” Courrech du Pont added.
With these masterminds (智者) working on perfecting our suitcase problems, wobbly luggage may soon be a thing of history, leaving us to enjoy our travels.
1.The main purpose of the first two paragraphs is to ______.
A. show the importance of a good wheeled suitcase for travel
B. lead up to the wobbling problem of wheeled suitcases
C. describe how unstable wheeled suitcases can be
D. show that wobbling can cause wheeled suitcases to stop working
2.According to the scientists, when a suitcase meets with an obstacle, ______.
A. the swaying will stop for a moment
B. its two wheels will jump into the air at the same time
C. even a small obstacle can lead to a serious damage
D. there is a series of repeated actions leading to the swaying
3.What can be done to keep a suitcase steady on an uneven path according to the text?
A. Slow down. B. Pull the suitcase at a faster speed.
C. Raise the handle of the suitcase. D. Increase the angle of the suitcase.
4.According to the article, the findings could ______.
A. help improve the design of suitcases
B. solve the wobble of suitcases completely
C. be helpful in the advancement of treadmills
D. be used to develop blades for boats
高三英语阅读理解中等难度题
You’ve got your fancy new suitcase and you’re ready to take it with you on your travels across the globe.
You get to the airport, quickly moving through the crowds on the uneven pavement, rushing to check in. Then, your heart sinks when you realize your new suitcase has got a serious case of the wobbles (摇晃).
Why does this happen?
Scientists from the Universite Paris-Diderot in France investigated this matter and published their findings in the science journal Proceedings of the Royal Society A. They also suggested some solutions to overcome this modern-day problem.
To learn more about the issue, they put a suitcase on a treadmill (跑步机) and observed what happened.
It was soon noted that the “wobble” was actually a result of repeated actions that caused the suitcase to sway from side to side. They discovered that if one of the wheels encountered an obstacle such as a small bump, it jumped into the air for just a moment and then banged back down to the ground. That second action caused the opposite wheel to lift off the ground and then to bang back down, causing the first to lift again and so on. This swaying increased as the luggage was pulled along.
“The suitcase is a fun way to tackle the problem, but the study would be the same for any trolley with two wheels or blades (桨叶),” Sylvain Courrech du Pont, lead author of the study, told BBC News. “So it will be the same for a caravan (大篷车) or maybe also for airplanes.”
Instead of slowing down when we see a rocky part of the path, the scientists recommended doing the exact opposite and speeding up. This is because going faster gives the wheels less time to rise and fall, preventing the case from swaying. They also said that reducing the angle of the suitcase by lowering its handle to the ground would help keep it steady.
“These findings could help researchers simulate and design better rolling suitcases and other pulled trolleys, such as towed trailers ,” Courrech du Pont added.
With these masterminds (智者) working on perfecting our suitcase problems, wobbly luggage may soon be a thing of history, leaving us to enjoy our travels.
1.The main purpose of the first two paragraphs is to ______.
A. show the importance of a good wheeled suitcase for travel
B. lead up to the wobbling problem of wheeled suitcases
C. describe how unstable wheeled suitcases can be
D. show that wobbling can cause wheeled suitcases to stop working
2.According to the scientists, when a suitcase meets with an obstacle, ______.
A. the swaying will stop for a moment
B. its two wheels will jump into the air at the same time
C. even a small obstacle can lead to a serious damage
D. there is a series of repeated actions leading to the swaying
3.What can be done to keep a suitcase steady on an uneven path according to the text?
A. Slow down. B. Pull the suitcase at a faster speed.
C. Raise the handle of the suitcase. D. Increase the angle of the suitcase.
4.According to the article, the findings could ______.
A. help improve the design of suitcases
B. solve the wobble of suitcases completely
C. be helpful in the advancement of treadmills
D. be used to develop blades for boats
高三英语阅读理解中等难度题查看答案及解析
—Have you got ________ ready for your trip to Hainan?
—No, I need to buy a swimsuit and a pair of slippers.
A．everything B．anything
C．something D．nothing
高三英语单项填空简单题查看答案及解析
Are you looking for some new and exciting places to take your kids (孩子) to? Try some of these places:
l Visit art museums. They offer a variety of activities to excite your kids' interest. Many offer workshops for making land-made pieces, traveling exhibits, book signings by children's favorite writer, and even musical performances and other arts.
l Head to a natural history museum. This is where kids can discover the past from dinosaur(恐龙) models to rock collections and pictures of stars in the sky. Also, ask what kind of workshops and educational programs are prepared for kids and any special events that are coming up.
l Go to a Youtheater. Look for one in your area offering plays for child and family visitors. Pre-show play shops are conducted by area artists and educators where kids can discover the secret about performing arts. Puppet(木偶)making and stage make-up are just a couple of the special offerings you might find.
l Try hands-on science. Visit one of the many hands-on science museums around the country. These science play-lands are great fun for kids and grown-ups alike. They'll keep your child mentally and physically active the whole day through while pushing buttons, experimenting, and building. When everyone is tired, enjoy a fun family science show, commonly found in these museums.
1.If a child is interested in the universe, he probably will visit .
A．a Youtheater B．an art museum
C．a natural history museum D．a hands-on science museum
2.What can kids do at a Youtheater?
A．Look at rock collections. B．See dinosaur models.
C．Watch puppet making. D．Give performances.
3.What does "hands-on science" mean in the last paragraph?
A．Science games designed by kids. B．Learning science by doing things.
C．A show of kids' science work. D．Reading science books.
4.Where does this text probably come from?
A．A science textbook. B．A tourist map.
C．A museum guide. D．A news report.
高三英语阅读理解中等难度题查看答案及解析
Are you looking for some new and exciting places to take your kids to? Try some of these places:
Visit art museums. They offer a variety of activities to excite your kids’ interest. Many offer workshops for making hand-made pieces, traveling exhibits, book signings (签名) by children’s favorite writers, and even musical performances and other arts.
Head to a natural history museum. This is where kids can discover the past from dinosaur models to rock collections and pictures of stars in the sky. Also, ask what kind of workshops and educational programs are prepared for kids and any special events that are coming up.
Go to a Youtheater. Look for one in your area offering plays for child and family visitors. Pre-show play shops are conducted by area artists and educators where kids can discover the secret about performing arts. Puppet (木偶) making and stage make-up are just a couple of the special offerings you might find.
Try hands-on science. Visit one of the many hands-on science museums around the country. These science play-lands are great fun for kids and grown-ups alike. They’ll keep your child mentally and physically active the whole day through while pushing buttons, experimenting, and building. When everyone is tired, enjoy a fun family science show, commonly found in these museums.
1.If a child is interested in the universe, he probably will visit
A. a Youtheater B. an art museum
C. a natural history museum D. a hands-on science museum
2.What can kids do at a Youtheater?
A. Look at rock collections. B. See dinosaur models.
C. Watch puppet making. D. Give performances.
3.What does "hands-on science" mean in the last paragraph?
A. Science games designed by kids.
B. Learning science by doing things.
C. A show of kids' science work.
D. Reading science books.
4.Where does this text probably come from?
A. A science textbook. B. A tourist map.
C. A museum guide. D. A news report.
高三英语阅读理解中等难度题查看答案及解析
Do you have the experience of digging out your suitcase, deciding what to bring and being afraid that you’ve forgotten something?1.. Hope they can transform the way you pack.
Keep a Basket Handy
Do you wait until the last minute to pack? Keep a basket in your bedroom, living room, or bath room that you can use to throw in items you’ll need to pack as you come across them. 2.. Besides, you can just put the contents of the basket into your suitcase if you are in a hurry to leave for the airport.
Buy Wrinkle-free Clothing
You won’t need to worry about carefully packing your items of clothing if they’re made from wrinkle-free materials. 3.. You’ll still look fresh and bright when you are in them at your destination.
Keep Old Packing Lists
Chances are that you end up taking trips that require you to pack similar items. Keep old packing lists from former vacations to the beach, ski resort, and city—that way, you’ll always have a list of at least the basics. 4.. So you don’t need to waste your effort to remember where you left your hand-written packing lists.
Schedule a Packing Time
Time can slip away from you before a trip-you may be caught up at work, at home, or be occupied with other responsibilities of daily life.5.. That way, you will not need to do your packing frantically (狂乱地) from the last minute to 1 o’clock on the day you leave.
A. Buy necessary stuff when you arrive.
B. That’s why I’ve distilled (提炼) the art of packing down to some essential tips.
C. This makes you less likely to forget the stuff.
D. Rolling your clothes is the best way to save space for the suitcase.
E. The best way to do this is to save them on your computer.
F. Just ball them up or put them at the bottom of the suitcase.
G. Determine a night well in advance of departure to pack.
高三英语七选五中等难度题查看答案及解析
131. --- Here , your new computer is ready.
--- Thank you.
--- ______ to call this number if you have any problems.
You’re free B. It is free C. Feel free D. Don’t forget
高三英语单项填空简单题查看答案及解析
Do you wake up every morning ____ energetic and ready to start a new day?
A.feel B.to feel C. feeling D. felt
高三英语单项填空中等难度题查看答案及解析
(2011·湖南高考)Do you wake up every morning ________ energetic and ready to start a new day?
A．feel B．to feel
C．feeling D．felt
高三英语单项填空中等难度题查看答案及解析
一Peter, have you got your new flat furnished?
一Yes．I some used furniture and it was a real bargain．
A．will buy B．have bought C．bought D．had bought
高三英语单项填空中等难度题查看答案及解析
一"Peter, have you got your new flat furnished?
—Yes. I ______ some used furniture and it was a real bargain.
A. will buy B. have bought C. bought D. had bought
高三英语单项填空中等难度题查看答案及解析