Future will be a marvelous world of artificial ______----- robots might have their emotions and we human beings might have robots as friends．
| A．preference | B．intelligence | C．exhibition | D．communication |
—What about the picnic plan?
—Not ________ yet. It’s being discussed.
| A．decided | B．decide | C．deciding | D．to be decided |
Look at the new computers, of ______ none are produced abroad.
| A．them | B．whom | C．which | D．these |
Theory is based on practice and ________ serves practice.
| A．in turn | B．by and by |
| C．by chance | D．in this case |
— How many of them do you want to act in the play?
—_______ , and still a large number needed!
| A．All | B．Both | C．Neither | D．None |
Since no other way to escape from the flood, ____ only safe thing is to take ____chance.
| A．an ; 不填 | B．the ; a | C．an; a | D．不填；the |