Вопрос № 223603 - Английский язык

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Scientists think that many – perhaps most – animals cannot see colours. The world is black and white to them.
To find out if dogs could see colours, scientists gave dogs food every time they played a certain piece of music. The dogs got ready to eat only when they heard this piece of music. They did not get ready to eat when they heard other pieces of music.
Then the scientists gave the dogs food every time they showed them a certain colour. The dogs got ready to eat when they saw this colour. The scientists then showed the dogs another colour. Again the dogs got ready to eat. The colours were all the same to them.
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What did scientists play every time when they gave dogs food?
Варианты ответов
  • They played the piano.
  • They played a certain piece of music.
  • They played the piano.
  • They played interesting games.
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Вопрос задал(а): Анонимный пользователь, 10 Ноябрь 2020 в 00:17
На вопрос ответил(а): Анастасия Степанова, 10 Ноябрь 2020 в 00:17