题目

白炽灯的灯丝通电后温度升高而发光，灯丝有时会在电网电压突然升高或在____▲____(开灯瞬间／长时间开灯)时烧断，电路烧断不一定总是无用的，实际电路中人们就利用烧断现象制造了________▲______(举一例)。 答案：开灯瞬间、熔丝   To stay awake, my brother finished a cup of coffee and ordered??????? .A． the other??????? ????????????? B． another ????????????? C． the others????????????? D． other