A. ①② B. ②③ C. ①④ D. ③④ 参考答案:D 答案解析:功能材料是指除力学性能以外还提供其他物理、化学、生物等性能的复合材料。包括压电、导电、雷达隐身、永磁、光致变色、吸声、阻燃、生物自吸收等种类繁多的复合材料。
第2题: [单项选择]Questions 15~18 are based on the following passage.What is being clone to make T-shirts more attractive A. New designs are being adopted. B. New technology is being employed. C. More artificial materials are being introduced. D. Advertisements are being widely used. 参考答案:A