弹性体
参考答案：
弹性体是呈现橡胶弹性的聚合物。当施加外力时发生大的形变，外力除去后形变可以恢复的弹性材料。
如伤者小腿骨折，兼有断骨突出，急救人员应如何做？
The phenomenon that the earth is becoming warmer has attracted ______ attention.[ ]
A. a huge number of
B. a large sum of
C. a great deal of
D. a great many
