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  3. Winter in many places means ice skating, sledding and snowball fights. But u

Winter in many places means ice skating, sledding and snowball fights. But u

游客2024-02-04  16
问题     Winter in many places means ice skating, sledding and snowball fights. But unless someone is prepared, outdoor fun can also mean frostbite(冻伤). Frostbite is damage that happens when skin【B1】______extreme cold for too long. It mainly happens on the hands, feet, nose and ears. People with【B2】______ cases of frostbite that affect only the skin may not suffer any【B3】______damage. But if deeper tissue is affected, a person is likely to feel pain every time the area gets cold. If blood vessels are damaged, people can suffer an【B4】______, gangrene(坏疽). Sometimes, doctors have to remove frostbitten areas like fingers and toes.
    The best way to avoid【B5】______injuries is to be prepared for the outdoors. Here is a simple way to remember four basic steps to staying warm. Think of COLD. C stands for cover. Wear a hat and scarf to keep heat from【B6】______through the head, neck and ears. O stands for overexertion. Avoid activities that will make you sweaty. Wet clothes and cold weather are a bad mix L is for layers. Wearing【B7】______, lightweight clothes, one layer on top of another, is better than a single heavy layer of clothing. D is for dry. In other words, stay as dry as possible.【B8】______the places where snow can enter, like the tops of boots, the necks of coats and the wrist areas of mittens. And there are a couple of other things to【B9】______: Eating snow might be fun but it lowers the body’s temperature. And drinking【B10】______ might make a person feel warm, but what it really does is weaken the body’s ability to hold heat. [br] 【B4】
选项
答案 infection
解析 由空格前的can suffer an可知，空格处需填入一个与gangrene并列的名词。结合录音可知，答案为infection，意为“感染”。
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