A. It has appeared since 1960. B. It is an electronic brain and can store a lot of information. C. It is a chip of silicon crystal and is very small. D. It becomes cleverer and more expensive every year. 参考答案:D 答案解析:根据文章第四段,芯片变得越来智能,体积越来越小,却越来越便宜。因此,D项的阐述不正确。