DBDDC
1.此句the Internet changed our lives in the 1990s告訴我們答案D。
2. 通過此句 A new cooking robot is used in Beijing.答案B。
3.通過此句robots are not only able to help people do the housework, they can also help the doctors do the difficult operations, play chess with people, play the piano and so on.知答案D。
4.Experts(專家) believe robots will be used everywhere from the industrial( 工業(yè)的) robots to service robots.告訴我們答案D。
5.C通過the robots will change our lives in the new century.和對
整篇文章的理解,可知答案C。