问题 单项选择题

Why does the author mention genetic engineering and computer science

A.To compare them with the new materials.

B.To show the significance of the new materials on the future world.

C.To compare the new materials to them.

D.To explain his viewpoint.

答案

参考答案:B

解析:推理判断题。解题线索在第一段:神奇的塑料、玻璃和陶瓷一定会像生物工程和计算机一样将改变世界。可见作者意在说明这种新材料对未来世界的意义,故选B)。文章第一段中间部分提到: practical discoveries led by superconducting ceramics that may revolutionize electronics,可见作者的确把它们和新材料相比,但这里的目的不仅仅是比较,而是要说明三者都具有同样的作用,即改变世界,故排除A);C)项“把新材料比作它们”不符题意;D)项“说明他的观点”过于笼统。

填空题
单项选择题