(1)Scientists are racing to build the world’s first thinking robot．This is not science fiction：some say they will have made it by the year 2020. Carol Packer reports.(2)Machines that walk，speak and feel are no longer science fiction．Kismet is the name of an android(机器人)which scientists have built at the Massachusetts Institute of Technology(MIT). Kismet is different from the traditional robot because it can show human emotions．Its eyes，ears and lips move to show when it feels happy, sad or bored．Kismet is one of the first of a new generation of androids――robots that look like human beings――which can imitate human feelings. Cog，another android invented by the MIT, imitates the action of a mother．However, scientists admit that so far Cog has the mental ability of a two―year―old.(3)The optimists say that by the year 2020 we will have created humanoids(机器人)with brains similar to those of all adult human being．These robots will be designed to look like people to make them more attractive and easier to sell to the