48． ____ he heard his name called, he turned around to see who was calling him.

　 　 A．At the moment 　 B．The moment　　 C．For the moment D．In the moment

47．Sales of home computers have ___ in recent years, which makes the computer companies develop quickly.

　 　 A．taken off　 　　　　 B．gone out　　　 　 C．broken up　 　　　 D．worked out

46． -Tom, would you like to come to our dinner party?

　 - ____.

　 A．Yes, I would　 　　　　　　　　　　　　　　　　　 B．Yes, with pleasure　

　　 C．No, I can’t come　 　　　　　　　　　　　　　　 D．Sure, it’s my pleasure.

45． -Thanks for helping me with this difficult maths problem.

　 -____. That’s what a close friend should do.

　 A．Nothing serious.　 B．All right　　　 C．Never mind　　 D．Forget it.

44．We ___ the general theory of relativity (相对论) ___ Albert Einstein.

　　　 A．depend; on 　　　　 B．thank ; for　　　 C．owe; to 　　　　 D．apologize; for

43．Wendy didn’t like John at first, but he was soon able to____by being especially understanding.

　 　 A．get her over　　　　 B．think it over 　　　 C．talk it over 　　　　 D．win her over

42．The president, together with his bodyguard, ___ to the nuclear station ____ there was an accident 20 minutes ago.

　　　 A．have come; which　 　　　　　　　　　　　　　　 B．came; in which　

　　　 C．has come; where　 　　　　　　　　　　　　　　　 D．came; in which

41．There are a lot to do. We can’t ____ to waste any time.

　　　 A．wait　 　　　　　　　 B．afford　 　　　　　　 C．have 　　　　　　　　　 D．want

40．Helen is much kinder to her youngest child than to the others, ___, of course, makes the others unhappy.

　 　 A．who　　　　 　　　 B．which　　 　　　　 C．that　　　　　　 D．what

39．The boy ___ be very naughty, but he is very lovely.

A．might　　　 　　　 B．can　　　 　　　　　 C．may　　　　　　 D．must