题目内容

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.

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Good morning,everyone.I'm Flyki and my partner is Michelle.Today,we two want to introduce a new invention designed______us to you here.It's called “flying car”.

Nowadays,the number of______is increasing,and it leads to a bad influence.People living in the cities have found that it's getting more and more______to move around in the streets.Traffic jams turn out to be a big problem.That's______we have the idea.

The car not only looks like a car but also looks like a plane.It has______rires(轮胎)and “foldable wings”.It also has the advantages of small volume(体积)and light weight.When it transforms into a plane,it can fly______a speed of 110 miles per hour.It's a “roadable aircraft”.All you need is just a driving license.Then,you can drive it just like driving a car.

The car will make our life more convenient,______it can switch between a car and a plane.To begin with,it can drive on any surfaces and thanks to its foldable wings,it can transform into a personal plane.When the roads are ______,it can help you easily reach the destination.Much time can be______.

This kind of car makes our lives______and more comfortable.If you have such a car,you will feel very good!

That's all.Thanks for listening.

1.A. with B. to C. by D. for

2.A. cars B. planes C. taxis D. buses

3.A. expensive B. interesting C. convenient D. difficult

4.A. what B. why C. that D. which

5.A. three B. four C. five D. six

6.A. in B. on C. for D. at

7.A. so B. though C. if D. because

8.A. crowded B. free C. wide D. short

9.A. wasted B. cost C. saved D. lasted

10.A. easier B. richer C. heavier D. worse

One day,a rich boy bought a magic mirror(魔镜).When he got home,he looked in the mirror.His face looked sad.He tried to smile and make funny faces.His face looked still sad.Then he did many happy things,but his face always looked sad.

“Oh,what a terrible mirror!It doesn’t work!”he said angrily.

The next day,on his way to buy some chocolate,he saw a little girl crying sadly.The rich boy went up to her and asked what had happened.The little girl said she couldn’t find her parents.“Don’t worry.I’ll help you,”the rich boy said.So they went to look for them together.Finally,they found her parents.They were so thankful for his help.After the rich boy arrived home,he looked in the mirror as usual.To his surprise,his face looked very happy.The boy understood the magic of the mirror.The mirror could show the true feelings of its owner.

This was true——the rich boy had helped that little girl so he felt really happy.

1.One day,a rich boy bought

A. a magic mirror B. a normal mirror

C. a small mirror D. a magic book

2.The boy’s face always looked in the mirror on the first day.

A. happy B. sad C. terrible D. funny

3.On his way to buy some chocolate,the rich boy saw crying sadly.

A. a little boy B. a little girl C. a little dog D. a little cat

4.Finally,the rich boy

A. lost his parents

B. bought a new mirror

C. helped the little girl find her parents

D. bought a mirror for the little girl

5.From the story,we know the boy was .

A. brave B. foolish C. clever D. helpful

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