Question

    Different from common belief, blue light may not have a strong negative effect as people thought-according to the scientists from the University of Manchester.

It's known that our body clock measures brightness through melanopsin(黑素蛋白)，a specialized light sensitive protein in the eye. So there has been lots of interest in studying the influence of light on the body clock. Researchers changed the make-up of short and long wavelength light, which provided a small difference in brightness, as well as changes in color. Findings suggested blue light might be troublesome to our sleep patterns.

The new research, however, used a different method, since the changes in color may oppose the benefits from reducing the brightness signals detected(探测)by melanopsin. The team used specially designed lighting to change color without changing brightness.

Findings of the new research showed that blue colors produced weaker effects on the subjects' body clock than equally bright yellow colors. "Our recognition of color comes from the retinal cone cells(视网膜锥形细胞)，and the blue color signals they supply reduce the influence of light on the body clock," explained the lead researcher. "The research shows the common view that blue light has the strongest effect on the body clock is misguided.”

According to the team, using dim(昏暗的)，cooler lights in the evening and bright warmer lights during the day may be more beneficial to ensure healthy patterns of sleep. Twilight(暮光)is both dimmer and bluer than daylight and the body clock uses both of those features to decide on the proper times to be asleep and awake.

The findings have important suggestions for the design of lighting and visual displays which aim to promote people's sleep patterns. Present technologies are mostly designed to limit our evening exposure to blue light by changing the screen color of mobile devices. The technology, however, may send the body clock mixed messages. This is because the small changes in brightness they produce come along with colors that are commonly seen during the day. So there's more for the designers to take into consideration.

Setting our body clocks in line with our social and work schedules can be good for our health, and using color correctly could be a way to help us better achieve that.

1.The writer mentions different research methods in Paragraph 2 and 3 to________.

A.suggest how the data of the research should be collected

B.explain why the findings of the old research are reasonable

C.discuss possible ways of studying the influence of blue light

D.show the progress in the methods used in the studies of blue light

2.According to the new findings, what should the designers take into consideration?

A.The changes in both colors and brightness.

B.The influence of the daylight on sleep patterns.

C.The suggestions on the proper use of mobile devices.

D.The balance between technologies and the body clock.

3.What can we learn from the new research?

A.Blue light cannot he easily detected by the body clock.

B.Blue light has the weakest effect on people's body clock.

C.Blue light is not as harmful to their sleep patterns as people thought.

D.Blue light benefits people more in their sleep patterns than yellow light.

Answer

1.D

2.A

3.C

【解析】

文章主要介绍了一般人认为蓝光会对人们产生强烈的负面影响，但是一系列的研究结果来验证这个结论是错误的，蓝光对人们的生物钟的影响并不是人们认为的那样。

1.推理判断题。根据文中第二第三段的理解可知，尤其是文中Researchers changed the make-up of short and long wavelength light, … The team used specially designed lighting to change color without changing brightness.可知，这里主要是展示蓝光研究方法的进展，故选D。

2.推理判断题。根据文中Findings of the new research showed that blue colors produced weaker effects on the subjects' body clock than equally bright yellow colors. 新的研究发现，蓝色对受试者的生物钟产生的影响比同样明亮的黄色弱。可知设计师应该考虑颜色和亮度的变化，故选A。

3.推理判断题。根据整个文章的理解及文章的开头Different from common belief, blue light may not have a strong negative effect as people thought-according to the scientists from the University of Manchester. 曼彻斯特大学的科学家们认为，不同于一般人的看法，蓝光可能不会像人们想象的那样产生强烈的负面影响。以及The research shows the common view that blue light has the strongest effect on the body clock is misguided.研究表明，人们普遍认为蓝光对生物钟的影响最大，这种观点是错误的。可知蓝光对他们的睡眠模式没有人们想象的那么有害。故选C。