Part Ⅳ Cloze (10%)

　　Directions: There are 20 blanks in the following passage, and for each blank there are 4 choices marked A, B, C and D at the end of the passage. You should choose ONE answer that best fit into the passage. Then mark the corresponding letter on the Answer Sheet with a single line through the center.

　　Do you forget to turn off the lights and heaters when you go out of a room? In 2040 it will not 56_ . They will turn themselves off—and on again when you return . A sensor will 57_ the presence of a human and turn the systems on , and when the humans 58_ it will turn them off again.

　　The sensors will work 59_ the central home computer , and they will do much more than just turn the fires and lights on and off for you . They will detect 60_ electrical appliances , plugs or switches , 61_ them so that they cannot harm anyone and then 62_ you that they need 63__ . They will detect fire and if you are out of the house , the computer will call the fire brigade . It will also call the police 64__ the sensors detect an intruder (闯入者) . This will not be too difficult 65__ the locks on the 66__ doors will be electronic . You will open them using your 67__ card —the one you use for 68__ —maybe using a number 69__ only to you .

　　The computer will be 70__ than a fireman-policeman servant . It will be an entertainer , and most of your 71__ will come 72__ into your home . It does now , 73__ by 2040”entertainment” will 74__ much more . For one thing , you will be able to take 75__ actively , rather than just watching …

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