题目内容
召开业主大会会议,应当于会议召开()以前通知全体业主。
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业主大会发起的主体是()。
In a computer, if a logical left shift of the operand occurs, its lowest bit is(66).
中、重度营养不良小儿热量供应的原则是（）
第二节 完型填空
阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中选出能填入相应空白处的最佳选项。
Electricity becomes a part of our daily lives. In the homes, electricity works 【B1】 of our labor 【B2】 devices. It drives our washing machines and refrigerators. It cooks our food. 【B3】 large companies, it works the lifts and escalators (电动扶梯) 【B4】 giving services for lighting. In commercial offices, it works our computers 【B5】 enable the work to be carried on more quickly and efficiently.
Physicians and scientists depend very often 【B6】 electricity to give heat to 【B7】 instrument for scientific experiment. It also provides us with amusements 【B8】 radio and television at home, movies in the cinemas and various 【B9】 of entertainments in the amusement park. All those are 【B10】 by electricity.
At night ,roads are lit by electricity to enable people and traffic to move smoothly. Neo-lights (霓虹灯) 【B11】 in advertising boards have become the characteristic of 【B12】 modern city.
Nobody living in skyscrapers could 【B13】 go up and down so many stairs, 【B14】 there were no electricity to drive the lifts.
【B15】 ,none of us seems to bother how electricity benefits us 【B16】 it goes wrong. When an electricity plant in a certain area fails, everything in that 【B17】 of the city would be at a standstill. Trams(电车)refuse to move, offices 【B18】 to carry on with their work. If such incident occurs in summer, food will probably go 【B19】 in refrigerators.
Yet when electricity resumes(恢复), 【B20】 a person seems to think how important it is to us.
【B1】
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