The sooner skin cancer is found, the easier it is to treat. So doctors advise people to examine all areas of their skin once a month, from the top of their head to the bottom of their feet. Even look under the nails and between the toes. Professional examinations are also important. See a doctor if a mole bleeds or itches or is bigger than six millimeters. The Cleveland Clinic suggests taking pictures of moles and dating the images to compare over time.
Hats, sunglasses and clothing offer protection from harmful sunrays, but that can depend. Experts say the denser the weave of the material, the less ultraviolet radiation reaches the skin. Also, darker colors may offer more protection, and natural cotton can block more than bleached cotton. When clothing is wet or stretched, however, it lets more UV radiation pass through. Choose sunscreen products and sunglasses designed to protect both UV-A and UV-B rays. Put a thick amount on all areas of skin that will get sun. UV levels can be high even on cloudy days. Put on more sunscreen if you stay in the sun for more than two hours and after you swim or sweat a lot from activities.
Questions 26 to 29 are based on the passage you have just heard.
26 Who are the most likely to get skin cancer?
27 What is the doctors advice to people?
28 Which is the most effective in protecting people from harmful sunrays?
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