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.
我们经常使用微信(WeChat)与同学和朋友交流,这里面可能涉及到个人隐私,假如你的父母想看你的聊天记录,你会同意吗? 学校英语报正在就此话题进行讨论,请你整理以下讨论结果,并发表自己的看法。
理由 | |
同学观点 | 1.每个人都有自己的隐私,微信是我们与朋友一起分享心事,倾述烦恼的理想(ideal)场所,不希望父母看到。 2.父母会过度担心我们的交友,学习等。 |
你的观点 | … … |
注意:
1.词数:80左右
2.包含以上各点,意思连贯、符合逻辑。
Talking on mobile WeChat has become more and more popular now. But will you share everything on your WeChat with your parents?
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