（一）SingingAlarmsCouldSavetheBlind根据材料，回答下列问题。Ifyoucannotsee,youmaynotbeable

共享题干题 （一）Singing Alarms Could Save the Blind 根据材料，回答下列问题。 If you cannot see, you may not be able to find your way out of a burning building--and that could be fatal. A company in Leeds could change all that:________(51 ) directional sound alarms capable of guiding you to the exit. Sound Alert, a company " :________(52) the University of Leeds, is installing the alarms in a residential home for:________ ( 53 ) people in Sommerset and a resource centre, for the blind in Cumbria. :________ (54 ) produce a wide range of frequencies that enable the brain to determine where the:________( 55 ) is coming from. Deborah Withington of Sound Alert says that the alarms use most of the frequencies that can be :________ (56) by humans. "It is a burst Of white noise :________ (57) people say sounds hkestatic on the radio," she says. "Its life-saving potential is great. " She conducted an experiment in which people were filmed by thermal-imaging cameras trying to find their way out of a large:________ (58) room. It :________ (59) them nearly four minutes to find the door:________ (60) a sound alarm, but only 15 seconds with one. Withington studies how the brain:________ (61) sounds at the university. She says that the:________(62) of a wide band of frequencies can be pinpointed mote easily than the source of anarrow band. Alarms:________(63)the same concept have already been installed on emergency vehicles. The alarms will also include rising or failing frequencies to indicate whether people should goup:________(64) down stairs. They were :________ ( 65 ) with the aid of a large grant from BritishNuclear Fuels.1.[不定向选择题]________A.smoked B.smoke-filled C.filled with smoke D.smoke-filling 2.[不定向选择题]________A.or B.and C.but D.otherwise

1.参考答案：B
参考解析：从所给的选项可以看出，这里要表达的意思是“烟火弥漫的房间”。有了这个理解，现在要做的就是选择正确的表达形式。A是。烟熏的”，D是“使……烟火弥漫的”，所以意思不对，C填入后就出现filled with smoke room，不符合语法。只有B是正确选项。
2.参考答案：A
参考解析：根据上半句中的rising or frequencies，这里应填入0r，与上半句表达的意思相一致。音频升高表示上楼，音频降低表示下楼。3.[不定向选择题]________A.Alarms B.Alarm C.The alarm D.The alarms

这个解释是对的