填空题 Protect Yourself from the Sun
The best way to take care of your skin is to protect it from the sun. Ultraviolet (紫外线的 ) light—the invisible but intense rays of the sun—damages your skin, causing deep wrinkles, dry, rough skin, liver (肝脏) spots, and more serious disorders such as skin tumors (肿瘤).
For the most complete sun protection, use all three of these methods:
Avoid the sun during high-intensity hours. The sun"s rays are the most damaging from 10 a. m. to 4 p. m. Reduce the time you spend outdoors during these hours.
Wear protective clothing. Cover your skin with clothing, such as long-sleeved shirts, long pants and wide-brimmed (宽边的) hats. Also, keep in mind that certain clothing styles and fabrics offer better protection from the sun than do others. For example, long-sleeved shirts of far better protection than short-sleeved shirts do. And tightly woven fabrics such as denim (粗斜纹棉布) are better than loosely woven fabrics such as knits (编织物).
Use sunscreen. Apply sunscreen liberally 20 minutes before going outdoors and reapply every two hours, after heavy sweating or after being in water.

填空题 What is the best way to take care of our skin?
The best way is to protect it 1.

填空题 How does the article define Ultraviolet light?
It is defined as the 1 rays of the sun.

填空题 According to the article, when should we reduce the time spent outdoor?
From 1.

填空题 Which clothing can offer more protection from the sun, denim or knits?
1.

填空题 When is the appropriate time to apply sunscreen?
1 before going outdoors.