2. 外语
  3. Plastic We use plastic wrap to protect our foods. / We put our garbage in plastic bags or plastic cans. / We sit on plastic

Plastic We use plastic wrap to protect our foods. / We put our garbage in plastic bags or plastic cans. / We sit on plastic

admin2016-03-05  21
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答案 Plastic We use plastic wrap to protect our foods. / We put our garbage in plastic bags or plastic cans. / We sit on plastic chairs, play with plastic toys, / drink from plastic cups, and wash our hair with shampoo from plastic bottles. / Plastic does not grow in nature. It is made by mixing certain things together. / We call it a produced or manufactured material. / Plastic was first made in the 1860s from plants, such as wood and cotton. / That plastic was soft and burned easily. / The first modern plastics were made in the 1930s. / Most clear plastic starts out as thick, black oil. / That plastic coating inside a pan begins as natural gas. / Over the years, hundreds of different plastics have been developed. / Some are hard and strong. Some are soft and bendable. Some are clear. Some are many-colored. / There is a plastic for almost every need. Scientists continue to experiment with plastics. / They hope to find even more ways to use them. /
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