Подготовьте небольшой отчет на тему модель черного ящика . опишите проблему множестве вариантов модели черного ящика , для одной и тойже системахна своих примерах . перечислите нежилательных входы и выходы устоновите как можно устранить недостатки системы

School really gives us a lot. This is a real school of life. We definitely get knowledge on school subjects. Besides, teachers teach us ethic, morality, discipline, speak properly and express our thoughts. Teachers help to form the basic life goals. Both public and private education have their own advantages and disadvantages. In a private school teachers more attentive to children. But not everyone can afford to pay for education. In a state school children are less arrogant and more friendly. But in a state school then give general knowledge without advanced study of definite subjects. I don't which school to study in b cause a lot depends on pupil's own efforts.

1 a) Does he often (wake) ut at 6 o'clock in the morning? b) Is he ( waking) up now? c) Did he ( wake) up at 9 o'clock yesterday morning? d) Will he (  wake) up early tomorrow? 2. a) Who ( swims) in the river every summer? b) Who ( is swimming) in the river now? c) Who (swam) in the river last summer? d) Who (will swim) in the river next week? 3. a) With whom do they usually ( go) for a walk in the forest? b) With whom are they ( going) for a walk in the forest now? c) With whom did they ( go) for a walk in the forest the day before yesterday? d) With whom will they ( go) for a walk in the forest tomorrow afternoon?