Jake’s passed his exams. We’re going out to ______.
| A．joke | B．invite | C．celebrate | D．argue |
Rome was not built in a day. You should set ____ goals and work hard to achieve them.
| A．alternative | B．considerable | C．subjective | D．realistic |
The company provides cheap Internet access._____ , it makes shareware freely available.
| A．In addition | B．In brief | C．In return | D．In common |
----- In recent years,___ problem of global warning has been very serious.
------That’s right. People are facing ____ number of natural disasters now.
| A．不填; | B．a; the | C．the; a | D．a; a |
The generation _____ makes it difficult for parents to
understand their children's opinions.
| A．division | B．gap | C．separation | D．interval |
With sufficient scientific information a manned trip to Mars should be _____.
| A．obtainable | B．potential | C．considerable | D．feasible |