2020年12月英语四级听力50篇:07 Plastic

2020-10-02 10:27:00来源:网络

  2020年12月大学英语四级听力50篇(汇总)

  英语四级听力50篇:07 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 ways to use them!

  2020年12月大学英语四级听力50篇(汇总)


英语四级无忧计划立减1000元

历年考研真题及答案

扫码即刻查分 四六级最新答案

四六级好课 海量资料定期更新

更多资料
更多>>
更多内容
更多>>
更多公开课>>
更多>>
更多资料