ProtectingYourEyesightNowadays most peoplehavebadeyesig...
問題詳情:
Protecting Your Eyesight
Nowadays most people have bad eyesight. Don’t take your eyes for granted. Here are some tips on protecting your eyesight.
Eat for good vision.
Protecting your eyes starts with the food on your plate. Nutrients such as vitamin C and vitamin E may help ward off (avoid) vision problems. 36 You can choose green vegetables, eggs,beans and other non-meat protein sources.
Wear sunglasses for good vision.
37 Choose sunglasses that block 99% to 100% of both UVA and UVB rays. If you wear contact lenses (隱形眼鏡), choose offering UV protection. It’s still a good idea to wear sunglasses for more protection.
Quit smoking.
Smoking makes you more likely to get cataracts (白內障), optic nerve (視覺神經) damage, and macular degeneration (黃斑部退化). If you have tried to quit smoking before and started smoking again, keep trying. The more times you try to quit smoking, the more likely you are to succeed.
38
Staring at a computer screen can cause so many problems:dry eyes, headaches and neck, back and shoulder pain. To protect your eyes, you can position your computer so that your eyes are level with the top of the monitor. This allows you to look slightly down at the screen. Try to avoid glare on your computer from windows and lights. Use an anti-glare screen if needed. Every 20 minutes, rest your eyes by looking 20 feet away for 20 seconds. 39
Visit your eye doctor regularly.
Everyone, even young children, should get their eyes examined regularly. 40 They can also find some eye diseases, such as glaucoma (青光眼). The earlier diseases are found, the easier they are to be treated.
A. Use safe eyewear (護目鏡).
B. Look away from the computer for good eye health.
C. Eye exams help you protect your sight and see your best.
D. Regularly eating nutritious foods can lead to good eye health.
E. Wear glasses when examined under the guidance of your doctor.
F. At least every two hours, get up and take a 15-minute break. G. The right kind of sunglasses will help protect your eyes from the sun's ultraviolet (紫外線的) rays.
【回答】
DABFC
知識點:七選五題型
題型:閱讀填空
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如圖中,A、B、C、D、E是單質,G、H、I、F是B、C、D、E分別和A形成的二元化合物,已知:①反應C+G ...
問題詳情:如圖中,A、B、C、D、E是單質,G、H、I、F是B、C、D、E分別和A形成的二元化合物,已知:①反應C+G B+H能放出大量的熱,G是紅綜*固體粉末;②I是一種常見的溫室氣體,它和E可以發生反應:2E+I2F+D,F中的E元素的質量分數為60%.回答問題: ⑴①中反應的化學方程式為 ...
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用若干個體積為1的正方體搭成一個幾何體,其正檢視、側檢視都是如圖所示的圖形,則這個幾何體的最大體積與最小體積的...
問題詳情:用若干個體積為1的正方體搭成一個幾何體,其正檢視、側檢視都是如圖所示的圖形,則這個幾何體的最大體積與最小體積的差是()A.2B.3C.4D.5【回答】解析:由正檢視、側檢視可知,此幾何體的體積最小時,底層有5個小正方體,上面有2個小正方體,共7個小正方體;體積最大時,底...
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—Thestateofillnessiscomplicated.Weneedanexperienceddoct...
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“吃得營養、吃出健康”是人們普遍的飲食追求,下列說法不正確的是A.人每天都應攝入一定量的蛋白質B.過量食用油脂...
問題詳情:“吃得營養、吃出健康”是人們普遍的飲食追求,下列說法不正確的是A.人每天都應攝入一定量的蛋白質B.過量食用油脂能使人發胖,故應禁止攝入油脂C.糖類是人體能量的重要來源D.過量攝入微量元素不利於健康【回答】B知識點:各地會考題型:選擇題...
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