题型:语法填空(语篇) 题类: 难易度:普通
【名师面对面】中考英语必备词汇通关训练 第三关 第二十一组
There are more and more tall buildings now. The growth in tall buildings has led a great need for window washers. The job is dangerous and (accident) happen from time to time. However, the dangerous job may soon be done by Ozmo, smart window cleaning robot.
Much like humans, Ozmo sits on platforms hanging from the buildings and uses (it) arms and brushes to clean the dirt on the windows. A 3D map of the building (allow) the robot to move up and down. The robot can move out of the way there are unexpected events, such as the sudden opening of a window. Unlike other window washers, the robot cleaner does not need soap (clean) the glass. Instead, it uses distilled water does no harm to the environment.
It takes three cleaners 480 hours each to clean the windows of a 40-story glass building but the robot can complete the task in just 80 hours. However, unlike other robots, Ozmo will not replace human workers, only making their jobs much (safe). Human workers will control the robot from below.
Whether Qzmo, which is still being tested, does as good a job as humans remains to be seen. Past efforts to use a robot to do this dangerous job have not been (success), because the machines do not have the same eyes as humans and often miss the dust collected on window corners.
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