浙江杭州市富陽區(qū)新登中學(xué) 胡君祥

摩摩 天天大大樓樓 的的洗洗 窗窗 工工被被 稱稱為為是世 世界上界上最 最難的難的工 工作 作之一之一。在。在美美國國，這，這個個職職業(yè)位的的工工資資可可以以達達到到每每小小時2時72美7元美元以以上，上通， 常通工常人需們要需工要人懸們掛懸在掛離在地離面地數(shù)面百數(shù)米百的英高尺空的進高行空作。業(yè) 一。名一中名學(xué)中生學(xué)破生解使了這這項一工難作不題再，他是發(fā)個明難了題清，他理發(fā)摩明天了大可樓以的清窗潔戶摩的天機大器樓人的。窗戶的機器人。

題材科技題材科技文章詞數(shù) 難度 建議用時說明文文章詞數(shù) 難度 建議用時說明文體裁體裁458 ★★★ 8 分鐘458 ★★★ 8 分鐘

難詞探意

1. skyscraper /?ska?skre?p?(r)/ n. 摩天大樓

2. tackle /?t?kl/ v. 處理

3. buffer /?b?f?(r)/ n. 緩沖器

4. squeegee /?skwi?d?i?/ n. 橡皮刮水刷

5. propeller /pr??pel?(r)/ n. 螺旋槳

6. commercialize /k??mз???la?z/ v. 商業(yè)化

“Washing windows on a skyscraper is a dirty job. Hanging off the side of a building can also be incredibly dangerous,” notes Oliver Nicholls, 19. So this 12th-grader from Sydney, Australia, invented a robot to tackle the job.

Some recent incidents inspired his project. In one, a couple of high-rise window washers were standing on a platform that collapsed. No one died, but the pair were seriously injured. Oliver also witnessed someone fall and break his leg while cleaning a glass awning over the entrance to a building.

The new robot is about the size of a medium-sized picnic cooler and weighs 12 to 15 kilograms(26 to 33 pounds). It's designed to hang off the side of a building from ropes or cables, just as current window-washing platforms do. A hose carries water to the robot. A cable delivers it electric power.

The robot cleans windows much as a human would. But the device is controlled by a computer program. First, the robot sprays a small amount of water onto a window. Then, it moves up and down and across the window. Buffers covered with tiny fibers rub against the glass, scrubbing away any dirt. As the robot moves, it uses a windshield-wiper-style squeegee to remove any water left behind.

The computer controls the robot's up-and-down movements by adjusting the ropes or cables from which the device hangs. When the robot needs to move from one window to another, a set of propellers kicks into gear. They push the robot a short distance away from the building, while the cables slide along a railing to carry the robot over to the next window. Then, as a different set of propellers holds the robot tight against the window, the cleaning cycle repeats.

Oliver tested his robot by cleaning sample windows he'd built in his backyard. “The robot's propellers can hold the robot against a building even in winds as high as 45 kilometers(28 miles) per hour,” the teen reports. He performed those tests using his family's leaf blower.

Oliver showed the robot here, this week, at the Intel International Science and Engineering Fair(ISEF). The science fair competition was created by Society for Science & the Public, or SSP, and is sponsored this year by Intel. The 2018 event brought together almost 1,800 finalists from 81 countries.

Besides limiting the chance of injury, this window-washing robot could save building owners a bit of money. If commercialized, Oliver estimates it would cost about $11,000 to buy. “That's about the same cost as hiring a crew to clean a 7-story building,” he notes. So Oliver suspects his robot might be able to pay for itself after cleaning just one such building.

Reading Check

1. What encouraged Oliver to develop his project?

A. Accidents he experienced. B. His interest in robot design.

C. High costs of washing windows. D. Risks facing high-rise window washers.

2. What do we know about the robot?

A. It hangs from ropes or cables while working. B. It can produce power while working.

C. It is supported by a platform. D. It carries water itself.

3. Why did Oliver test his robot in his backyard?

A. To see its wind-resistance ability.

B. To record how efficiently his robot can work.

C. To test the safety of its working environment.

D. To know if it needs a different set of propellers.

4. What does the last paragraph imply about the robot?

A. It is costly but time-saving. B. It still has many limitations.

C. It has huge commercial potential. D. It has been a favorite of building owners.

Language Study

Difficult sentence

It's designed to hang off the side of a building from ropes or cables, just as current window-washing platforms do.

【翻譯】_________________________________________________________________________________

【點石成金】該句里的just as current window-washing platforms do是as引導(dǎo)的比較狀語從句。