On a slightly more worrisome note, there are those who think that LED lights do significant damage to our vision over time, namely because of the impact that the lights can have on our retina. While the accumulation of cellular debris is a risk if you are exposed to intense LED light, y...
Last but not the least, mobile phones are harmful to our health. To sum up, moblie phones as a tool to faciliate our lives, we should use them appropriately to make convenience and reduce their negative impacts. 如今,随着我们社会的快速发展,特别是信息技术和信息产业的发展,手机变得触手可及,在...
And the roads have inbuilt LED lights to replace the traditional road signs and lines, which are usually painted and harmful to humans. What's more, the heating systems in the solar roads can take care of the snow and ice on the roads for drivers.Test solar roads have been built in ...
And the roads have inbuilt LED lights to replace the traditional rood signs and lines, which are usually painted and harmful to humans. What's more, the heating systems in the solar roads can take care of the snow and ice on the roads for drivers....
百度试题 结果1 题目12. Don't play with your phone when the lights are off. That will be harmful for your eyes. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
And the roads have inbuilt LED lights to replace the traditional rood signs and lines, which are usually painted and harmful to humans. What's more, the heating systems in the solar roads can take care of the snow and ice on the roads for drivers. Test solar roads have been built in ...
To the average person, artificial lighting wouldn’t seem to pose an issue. After all, we are all so grateful to have lighting, particularly at nighttime, that we wouldn’t think twice that man-made illumination could be harmful to the earth. Perhaps more people than not are even aware of...
根据第二段"Scientists have found that it is especially harmful to nocturnal(夜间的) animals.(科学家发现它对夜间活动的动物尤其有害。)"和第五段"Man-made lights lead them away from the ocean.(人造灯光将他们从海洋中带走。)"以及最后一段"Every year,a large number of birds di...
“Matt is the Science Star of the week,” Mrs. Perry announced. Matt walked___25___back to his seat. What a perfect day! 11A. howB. where C. whyD. when 12. A. myB. yourC. hisD. her 13. A. handed inB. looked through C....
The sales pitches tempt: Blue-light-blocking glasses are supposed to protect eyes from the effects of short-wavelength light emitting from our smartphones, computer screens and LED lights. Given how much time we spend on our devices, this sounds like a smart investment, right? After all, eye...