Scientists have been experimenting with four-leg robots for years. They want to use robots to carry heavy things over difficult land.
But providing enough power for those kinds of robots has been a problem. Now, that has changed. Engineers at MIT have designed a running robot that runs on batteries. Scientists say their robots will soon be able to run like cheetahs, the fastest land animals on Earth.
One difficulty in designing these types of robots continues to be providing power. These machines are still quite heavy and they need a lot of power to run. But the cheetah-like robot designed by engineers at MIT is light enough m run on batteries.The robot weighs just 30 kilograms. The robot needs only about 700 watts of power to run. This robot can actually jump 40cm high and it can land very safely and then it can run. The robots limbs and other parts were made in a three-dimensional or 3D printer. A strong, light-weight material called Kevlar is used to make the robot's part stronger.
But the development of MITs robot is not without its own set of problems. The robot's limbs must support heavy force, and sometimes they break.
Scientists say the new technologies used on this robot may be used in the making of limbs for disabled persons and other machines. Some of those machines may help save humans from performing difficult and dangerous jobs.
1.What is the challenge in designing the four-leg robots?
A. carrying heavy things B. Running fast. C. Being light enough. D. Providing enough power.
2.What can the new technologies on MIT's robot be used for?
A. For making a 3D printer. B. For making limbs for disabled persons.
C. For helping people do housework. D. For helping people live longer.
3.From the passage, we know that MIT's robot __________.
A. can carry heavy things B. can jump 30cm high
C. is made of Kevlar D. is still very heavy
4.What's the main idea of this passage?
A. Scientists have been working on four-leg robots.
B. A new robot has been designed by engineers at MIT.
C. The robots can help us do difficult and dangerous jobs.
D. The difficulty in designing the new robot.
These nature-themed films will inspire you to get into the spirit of green living this Earth Day – and everyday.
| Chimpanzee Chimpanzee is a nature documentary film about a young common chimpanzee named Oscar who finds himself alone in the African forests. In the movie, Oscar finds a new father who takes him in and raises him like his own child. It is the first interesting thing in the movie. The film was directed by Alastair Fothergill and Mark Linfield. We sell the tickets from November 20 to November 26.
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To the Artic This documentary adventure reveals an interesting tale of survival(生存). The Greg Macgillivray, and Meryl Streep, the famous actor, takes audiences into the lives of a polar bear and her twin seven-month-old kids during the 41 minutes. They work hard to find new homes. You can choose to 'Watch Now' or 'Download' it to a compatible device. |
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| Young Voices for the Planet It is a documentary. The filmmaker is Lynne Cherry. She wants everyone to know that kids can make the world different. The movie tells eight different stories of kids who are offering solutions for environmental problems. It is exciting to meet so many cool and kind kids and help their voices to be heard. Young Voices is a series of short films featuring children and young people using science to reduce the carbon footprint of their homes, schools. Amazon Instant Video $3.99 to rent $14.99 to buy | ||
1.According to the table above, which of the following movie can we watch at home?
A. Chimpanzee and To the Artic.
B. To the Artic and Young Voices Tor the Planet.
C. Chimpanzee and Young Voices Tor the Planet.
D. All the three movies.
2.If you want to watch To the Artic and Young Voices for the Planet, you should pay at least __________ .
A. $ 3.99 B. $14.99 C. $18.98 D. $20
3.The three movies are all __________.
A. comedies B. thrillers C. documentaries D. operas
4.From the table above we know that __________.
A. Lynne Cherry wrote To the Artic. B. Chimpanzee introduced a lovely kid Oscar to us.
C. Oscar’s new father likes him very much. D. To the Artic is about lives of penguins.
On a rainy day in late August my family and I set out on a new trip. We traveled by car to Girdwood along the Turnagain Arm and were lucky enough to see Beluga whales on the way.
We parked at the Hotel Alyeska. We then traveled by van(小型货车) to the Portage station where we got on the train that would take us to the Spencer Glacier Whistle Stop. It was a 20~25-minute train ride to Spencer Glacier where we got off the train and took a van to the lake.
We went across the lake in the kayaks. It is about 1.5 miles across the lake to the face of the glacier(冰川) . It was an experience to boat among the icebergs and to see the face of the glacier get closer and closer?
We were excited to begin our hike on the glacier. It was such a thrill walking on the glacier. It rained most of the day but it was still such a beautiful trip in a lifetime experience. After about two hours on the glacier we headed back to the kayaks. The guide took some pictures before we started back across the lake.
We were tired as it was an active day but we were also excited about the amazing trip we had at Spencer Glacier! Rain or shine, it is a journey I would love to do every year!
1.How did the writer get to the Spencer Glacier Whistle Stop?
A. By car. B. By van. C. By train. D. On foot.
2.What did the writer see on the way to Girdwood?
A. Beluga whales. B. The lake. C. The glacier. D. The kayaks.
3.How did the writer feel about the trip?
A. Tired and bored. B. Tired and excited. C. Relaxed and interested. D. Relaxed and surprised.
4.From the passage, we can guess the kayak is a kind of __________.
A. bike B. car C. van D. boat
Over the years, fried chips have become known worldwide and been enjoyed by adults and children in almost all countries. But do you know the world's First Potato Fry Museum was opened in November, 2013 in Belgium? For the fans of fried chips (French fries), they have a museum of their own!
The world's first museum of chips, was set up by Eddy Van Belle and his son in Belgium. The museum calls itself "the first and only museum for potato fries".
Eddy and his son are always proud of their favorite food. Eddy said, "Over the years, fries have become popular throughout the world. We are so proud that they originated from Belgium."
"So it is normal and necessary that the first fried chips museum is opened in Belgium," Eddy added.
The museum is in an ancient building with two floors. The museum shows a lot of exhibits, including ancient potato cutters, chip-making machines, and the pictures about the history of potatoes. You can see different potatoes and chips. You can also learn to make chips. It's a great place to learn about the history of fries and enjoy eating them, too! Do you know the biggest fun in the museum? You can eat many kinds of chips!
1.The World’s First Potato Fry Museum was built in __________.
A. America B. Belgium C. England D. Australia
2.Why did Eddy and his son set up the museum in Belgium?
A. Because there are more people interested in fried chips here.
B. Because they are proud that Belgium is their motherland.
C. Because they are the fans of fried chips.
D. Because they want people to know about the history of fries.
3.Which of the following is NOT true about the museum according to the passage?
A. You can see the oldest chip-making machine.
B. You can make the chips by yourself.
C. You can see different kinds of potatoes and chips.
D. You can have fun eating many kinds of chips.
假如你是班长，学校图书管理员要你根据下列提纲向你们班的同学宣布阅览室的一些规定：
1．阅览室开放时间：
星期一至星期五的下午5：00～6：00；星期六上午8：00～11：30。
2．不准在阅览室大声朗读。
3．不准在阅览室吃零食。
4．不准在阅览室使用手机。
5．不准在阅览室吸烟。
6．不准把书和杂志带出阅览室。
要求：1.词数：80～100词；2.开头已给出，不计入总词数。
life，use，they，become，send，person，control，that，safe，with
Since computers were invented in the USA in the 1950s，they have76.1.very important in many areas of work and leisure.There is no doubt that computers are very 77.2.in the technology and business.In space，computers have been used to control the speed and direction of a spaceship.78.3.the help of computers，doctors can find diseases easily and solve other problems.For example，tiny computers which are inside patients' bodies can keep 79.4.hearts beating normally.In factories，robots are 80.5.by computers that are like human brains.They can do work 81.6.is dangerous to humans.In business，computers are used to place and cancel orders.They are also making the workplace 82.7.and better.
Since the Internet came into being，people's 83.8.at home have been changed，too.More and more people have 84.9.computers that are used to play games and watch movies.Thanks to the Internet，people can do shopping and do business at home.Instead of writing letters on paper,people communicate by 85.10.emails and chatting online.The whole world is connected.The Internet is making the world smaller，like a village.
