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The unusual properties of spider silk—a remarkable combination of strength and elasticity—have long attracted the attention of many. Spider si has a brea point f greater th steel a may str its fu length bef breaking: a 0.01 centi thread c support eighty grams. Spider silk is also very durable, a feature well illustrated by the persistence of cobwebs. Throughout history, humans have adapted spider silk for many purposes. For a long period, thick webs were used in Europe as bandages.
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参考答案：lk king ar an nd etch ll ore meter an