2．I bought a robot             have more free time．

    A．because               B．therefore              C． in order to          D．as a result

1．The robot is            dear．I don't have               money．

    A．much too：too much                               B．too much：much too

    C．much too：much too                               D．too much：too much

20．What did the students say to the workers?

    A．Good-bye．         B．Good night．       C．See you later．

19．When did the students leave the factory?

    A．At eleven．         B．At half past eleven．C．At half past ten．

18．How long did the students stay at the factory?

    A．For an hour．      B．For two days．     C．For two hours．

B．He showed them around the sch001．

    C．He showed them around the town．

17．Ⅵmat did the old man show the students around?

A．He showed them around the factory．   

16．When did the students visit a factory?

A．On a fine morning in March．   

B．On a fine morning in May．

    C．On a fine morning in April．

15．Why is the other ticket cheaper?

A．Because it is slower．

B．Because there is not place to sleep．

    C．Because it arrives in the middle of the night．

    IV．听短文，选择正确答案。

14．What is the woman’s response to the first train mentioned?

A．It is going to the wrong destination．   

B．The train will arrive too late．

    C．The ticket it too expensive．