通读下面短文，掌握其大意，然后在各小题所给的四个选项中，选出一个最佳答案，并将其字母编号写在题号前的括号内。

　　 Swimming is very popular in summer. People like swimming in summer because water makes them 　46 　cool. If you like swimming but swim in a 　47　 　place, it may not be safe. These years, more than ten people 　48　 　while they were enjoying themselves in the water and　 49　 of them were students. But some people are 　50 　not careful in swimming. They often think they swim so　 　51 　that nothing can happen to them in water. Summer is here again. If you go swimming in summer, don't forget that better swimmers have died in 　52 . They died because they were not careful, not because they 　53 　swim. So don't get into water when you are 54 　If there is a "No Swimming" 　55 , don't get into water, either. If you remember these, swimming will be safer.

46．(　　 )A．felt　　　　 　　 B．feel　　　　　 　　　 C．feeling　　　　　 　 D．to feel

47．(　　 )A．difficult　 　　　 B．small　　　　 　　　　 C．right　　　　　　 　 D．wrong

48．(　　 )A．died　　　 　　 B．die　　　　　 　　　 C．have died　　　 　　 D．will die

49．(　　 )A．much　　　 　　 B．most　　　　　 　　 C．lot　　　　　　　 D．more

50．(　　 )A．yet　　　　 　　 B．already　　　　 　　 C．still　　　 　　　　　　 D．even

51．(　　 )A．fast　　　 　　 B．often　　　　　 　 C．well　　　　　 　　 D．hard

52．(　　 )A．holiday　　 　　 B．water　　　　 　　　 C．time　　　　　　 D．weekends

53．(　　 )A．couldn't　　 　　 B．wouldn't　　　 　　 C．needn't　　　　 　　 D．mustn't

54．(　　 )A．hot　　　 　　　 B．cold　　　　　 　　 C．good　　　　　 　 D．alone

55．(　　 )A．sign　　 　　　　 B．paper　　　　　 　　 C．writing　　　　 　　 D．saying

45．(　　 )--I have often told you ______ late.

　　　 　--Sorry, sir, but I had to because my bike broke down on the way.

　　 A．don’t be　 　　　　　　　 B．were　　　　　 　 C．to be　　　　　 　 D．not to be

44．(　　 )There is ______ orange in the cup．May I drink ______

　　 A．some; them　　 　　　 B．an; it　　　　　 　　 C．an; them　　　 　　　 D．some; it

43．(　　 )Could you tell me if it ______ today, please?

　　　 　--Yes．The radio says there will ______ a heavy rain later today.

　　 A．will rain; have　 　　　 B．will rain; be　　 　　　 C．rains; have　　 　　 D．rains; be

42．(　　 ) ______ beautiful weather we are having today!

　　 A．How　　　　　 　　 B．How a　　　　 　　 C．What a　　　　 　　 D．What

41．(　　 )--I ______ stay up late.

　　　 　--Really? I didn't．But I ______ working in the night now.

　　 A．used to; used to　　　　　　　　　　 　　　　　　　 B．was used to; used to

　　 C．used to; am used to　　　　　　　　 　　　　　　　 D．was used to; am used to