In some science fiction movies, evil robots refuse to die, no matter how hard people fight back.
Now science fiction has become science fact. For the first time, scientists have made a robot that can take a beating(挨打) and keep on going. Scientists from Cornell University made the robot, which looks like a spider with four legs.
Until now, even the most advanced(先进的) robot was almost certain to break down when it was damaged(毁坏). That is because its computer inside simply doesn’t know how to make the machine work after its shape has changed.
To deal with this problem, the scientists put eight motors(发动机) and two sensors(传感器) that read how the machine is working. They all give signals to the machine’s software. Using this information, the computer can then figure out the machine’s shape at any moment.
The new technology is a big advance in robot-making, scientists say, and it’s far from scary. It may someday help scientists create better artificial(假的) arms and legs and give new freedom to people who lose them. It might also help scientists understand how people and animals figure out their own sense of place in space.
“It has been difficult to design robots that can work well when the environment changes or when it’s damaged,” says Olaf Sporns of Indiana University in US. “With this work, we are nearer to solving this problem.”
1.Why do robots easily break down when they are damaged?
A.They cannot repair themselves.
B.The computer has changed a lot.
C.They have no computers inside.
D.The computer cannot work if the robot changes
2.The new technology allows the robot to .
A.do housework for humans
B.keep working after being damaged
C.remember a lot of information
D.tell people where it is
3.The underline word “them” in Paragraph 5 refers to .
A.sensors B.robots C.arms and legs D.scientists
4.How do the sensors in the robot work?
A.They can replace the computer when it’s broken.
B.They can find out where the damage comes from.
C.They help the computer learn the robot’s condition.
D.They can send signals to the person who uses the robot.
These days computer games have bcome more and more popular in many cities and towns. A lot of small shops along busy ___1___ have changed into computer game houses in order to get more ___2__. These places are always crowded with people
In the computer game houses, people __3__ a lot of money matching on the machine. It’s __4__ for one to beat a computer, but one can do well after trying again and again. People want to __5__ when they play computer games. The more they __6__, the more they want to win, and at last they even can’t __7__ without it.
The result is that some people don’t want to _8_ and they play in computer game houses for hours and hours. For school boys, things are __9__. They don’t want to have __10__. When school is over, they rush to the computer houses near their __11__. Some of them can get enough money from their ___12__. Some of them are not _13__ to get the money. So they have to steal or rob others’ and become __14_ . Computer game addiction(上瘾) is a __15_ problem in our life. Something has to be done to stop it.
1. A.streets B.schools C.towns D.cities
2. A.boys B.money C.computers D.houses
3. A.take B.spend C.cost D.pay
4. A.possible B.easy C.good D.hard
5. A.read B.learn C.win D.download
6. A.lose B.try C.waste D.watch
7. A.come B.eat C.study D.live
8. A.watch TV B.go out C.stay there D.work
9. A.better B.exciting C.even worse D.interesting
10. A.lessons B.games C.families D.sports
11. A.classes B.rooms C.schools D.shops
12. A.classmates B.teachers C.sisters D.parents
13. A.lucky B.unlucky C.careful D.polite
14. A.good B.bad C.rich D.poor
15. A.important B.serious C.unusual D.wonderful
---Hi, John. What are you going to do this Sunday?
--- . Do you have any ideas?
A.Nothing serious. B.Nothing much C.No problem D.Thank you
---What else do you want?
--- else. I think I have got everything ready.
A.Something B.Nothing C.Anything D.Everything
It is said that the gravity on Mars is only about of the gravity on earth.
A.three-eighths B.third-eighth C.third-eighths D.third-eight
Now more and more children leave their parents when they grow up.
It makes the old feel .
A.alone B.lonely C.frightened D.enjoyable