（    ）2．The first robot was invented by a Greek．

（    ）1．Robots have a long history．

9．A．happened              B．happens                  C．has happened         D．is happening

8．A．neighbors             B．police              C．friends            D．children

7．A．by                  B．from                C．without             D．with

6．A．hold                 B．wait                C．rest               D．watch

5．A．back                 B．over                C．away              D．past

4．A．but                  B．so                 C．for               D．or

3．A．know                B．catch               C．meet                  D．see