2018年公共英语三级口语主题：科技

　　1)关于卫星

　　man-made satellite can transmit data to everywhere .you can stay at home and watch cnn from USA.

　　2)关于手机

　　we can use mobilephone,and we can communicate with anybody.we can dial a number,and the other can receive the message.it takes much less time than any other means.

　　3)关于航天

　　we can fly into outer spaces.you know,spacecraft can transport out our astronaut into outer spaces.

　　4)关于和机器人下棋

　　you can see a oldman playing chess with robot.it is not easy to play with chess,because their calculation rate is very high.but I think it doesn't matter whether the oldman can win or not.he is old and probably is retired.robot accompany with him,and he don't feel lonely.