题型:阅读理解 题类:模拟题 难易度:普通
山东省济南市2019届高三英语第一次模拟考试试卷(音频暂未更新)
We humans love to stare into our smart devices. We gaze for hours—about 10 hours and 39 minutes a day—at our computers, smartphones, tablets and televisions. Is all this staring bad for us? It might be, mainly because as we stare at our devices we are exposing ourselves to blue light.
Blue light is a type of electromagnetic radiation with a very short wavelength that produces a high amount of energy. While it's true that light can damage our eyes under certain circumstances, there's no scientific evidence suggesting that blue light is harmful to our eyes. But many people still think it is, which is why blue light—blocking glasses are so popular. So do the glasses work?
“Everyone is very concerned that blue light may be causing damage to the eye, but there's no evidence that it may be causing serious damage, "Dr. Rahul Khurana, clinical spokesman for the American Academy of Ophthalmologists, told Business Insider.
Blue light exposure is nothing new. In fact, the sun is the largest source of blue light. Moreover, blue light is also present in LED light. But if blue light isn't harmful, then why are we constantly rubbing our eyes when we're looking at our screens? The answer is eyestrain(眼疲劳):More than 60 percent of people experience eye problems associated with digital eyestrain. And blue light, it seems, isn't the cause. Instead, our eyes are so strained because most of us blink less when we stare at our digital devices. So if eyestrain is the real issue, blue light-blocking glasses are probably of little use.
Fitting in fitness
Do you find excuses not to exercise? {#blank#}1{#/blank#} Here are a few ways to get you going.
Do what you love.
The easiest way to fall into the habit of doing exercise is to choose an activity you enjoy — one that doesn't feel like exercise, even though it is. {#blank#}2{#/blank#} If you play to your strengths, you'll find fitness activities you can enjoy for years.
Choose your hour.
Studies have shown that people who work out in the morning are most likely to stick with a routine. By doing exercise before the day starts, they can avoid the last-minute scheduling conflicts. But if you' re not a morning person, choose whatever time works best for you. {#blank#}3{#/blank#}
Call it by another name.
{#blank#}4{#/blank#} If it's something you have to do anyway — like washing the car or planting some bushes in the yard — you'll achieve two goals at once.
Partner up.
Exercise is more fun when you do it with others. {#blank#}5{#/blank#} On days when your motivation is low, you' re more likely to stick with the programme to avoid disappointing your exercise partners. You can also train with an expert. A personal trainer will help you set goals, design a personalized fitness programme, and vary your routine to keep it challenging.
A. Ask yourself: what am I good at? B. Make fitness part of your social routine. C. For example, you can join a running, walking, hiking, biking or tennis club. D. If you're in top form from noon to 1 pm, aim for a lunchtime workout. E. Would you rather do anything else — even sort your socks or clean the fridge? F. If a damp T-shirt is not your idea of a good time, try gentler forms of exercise. G. Substitute some challenging household activity for the standard exercise routine. |
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