专限时训练(三十二) [阅读填空(二)]
(限时:每篇15分钟)
A
A device that stops drivers from falling asleep at the wheel is about to undergo testing at Department of Transport laboratories and could go on sale within 12 months. The system, called Driver Alert, aims to reduce deadly road accidents by 20%—40% that are caused by tiredness. Airline pilots can also use it to reduce the 30% of all piloterror accidents that are related to fatigue(疲劳).
Driver Alert is based on a computerized wristband(表带). The device,worn by drivers or pilots,gives out a sound about every four minutes during the journey. After each sound the driver must respond by squeezing the steering wheel(方向盘). A sensor in the wristband detects this pressing action and measures the time between the sound and the driver’s response. Tiredness is directly related to a driver’s response time. Usually,a watchful driver would take about 400 milliseconds to respond,but once that falls to more than 500 milliseconds,it suggests that the driver is getting sleepy.
In such cases the device gives out more regular and louder sounds,showing that the driver should open a window or stop for a rest. If the driver’s response continues to slow down,the sounds become more frequent until a nonstop alarm warns that the driver must stop as soon as possible.
The device has been delivered to the department’s laboratories for testing. If these tests, scheduled for six months’ time,are successful,the markets will bring the product to market within about a year.
【2017高考英语二轮复习 限时训练32 阅读填空(2)】相关文章:
★ 2017高考四川省广安市英语阅读理解一轮系列训练:16(含解析)
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (46)
★ 【课堂新坐标】2017届高考英语(通用版)二轮复习短文改错专题训练:考法3 行文逻辑错误(含解析)
★ 重庆市2014高考英语阅读理解一轮(精品)训练题(17)附答案
★ 湖南省岳阳市2014高考英语一轮单项选择训练题(10)及答案
★ 2017高考四川省广安市英语阅读理解一轮系列训练:22(含解析)
★ 2014高考英语(新人教版)一轮基础训练(17)A、B卷(附答案或解析)
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (44)
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21