期末考资料整理‖听力教程2-100页note-taking

学期末快到了，每天整理一点复习资料放gongzhong号，方便打开手机就复习，懒得打印了。该文章英文内容为本人看着听力材料一个个打上去的，翻译是比较随便的，所以难免会奇奇怪怪，有出差错的时候，也没事啦，我写这文章主要目的是为了方便我自己看，方便自己复。

Unit9

#100页的notetaking#

B. Listen to a talk about “Can light affect your health?”

Many researchers now believe that it does affect both your physical and your mental state.

From daylight, our bodies absorb vitamin D through the skin. Old people especially need this vitamin to strengthen their bones. Certain skin diseases also benefit from exposure to sunlight. Less directly, light absorbed through the eye can stimulate hormone production, which in turn affects our mood.

Recent research has established that some people become depressed in winter, when the days are dark and most people spend less time in the open air. These people find that they lack energy, have difficulty concentrating and often gain weight in the winter months. When spring comes, these symptoms disappear.

Researchers have called this condition Sad-seasonal affective depression. The condition can be treated by exposing patients to special lights, known as full-spectrum lights. Ordinary light bulbs produce light at the red end of the spectrum, and fluorescent lights are in the green yellow range. Full-spectrum lights, on the other hand reproduce more accurately the effects of natural sunlight. As well as helping sufferers from seasonal depression, this lighting has been used to treat patients suffering from jet-lag. It is also being tried as a means of improving learning in school-children in Russia and America, and improving the efficiency of Japanese factory workers.

If you spend a lot of time in artificial light or indoors, or if you feel depressed in winter, you should try to spend more time in the open air. Young people need at least fifteen minutes a day in real daylight in summer, thirty minutes in winter.

Old people who risk vitamin D deficiency, should spend even longer exposed to natural daylight.

光线会影响你的健康吗？

许多研究人员现在认为，它确实影响你的身体和精神状态。从白天开始，我们的身体通过皮肤吸收维生素D。老年人特别需要这种维生素来增强他们的骨骼。某些皮肤病也受益于阳光照射。不太直接的是，通过眼睛吸收的光可以刺激激素的产生，这反过来又影响我们的情绪。

最近的研究已经证实，有些人在冬天变得抑郁，当天黑了，大多数人花更少的时间在露天这些人发现他们缺乏能量，难以集中注意力，往往在冬季增加体重。当春天到来时，这些症状就会消失。

研究人员称这种情况为季节性情感抑郁症。该病可以通过将患者暴露在特殊灯光（称为全频谱灯）中来治疗。普通灯泡在光谱的红色端产生光，荧光灯在绿色黄色范围内。全光谱灯，另一方面更准确地再现自然阳光的影响。除了帮助季节性抑郁症患者外，这种照明还用于治疗时差患者。它也被尝试作为一种手段，以改善在俄罗斯和美国的学童的学习，并提高日本工厂工人的效率。

如果你花很多时间在人造光或室内，或者如果你在冬天感到沮丧，你应该尝试花更多的时间在露天。年轻人在夏天的日光下每天至少需要十五分钟，冬天需要三十分钟。有维生素D缺乏风险的老年人，应该花更长的时间暴露在自然日光下。

吧

整理排版：shelly

图片来源：shelly