the 18th century people understood that the Earth was also a planet and that all the planets were moving around the sun.
Text 4.
An animal doctor is called a vet. Some vets work for zoos or animal hospitals. Many have their own private offices. Vets do most of the same things that doctors do. They take the animals temperature, listen to their heart beat and take X-rays. They also decide what kind of medicine a sick animal may need. If an animal is too thin, too fat or has specific health problems, the doctor may recommend a special diet. It takes about six to seven years of university studies to become a vet.
Text 5
People all around the world love ice cream. The biggest ice cream eaters in the world live in New Zealand. A New Zealander eats almost 30 litres of ice cream a year! Americans are in the second place, and people from Australia are in the third. The most popular kind of ice cream is vanilla, but some people find it boring. Other popular flavours are chocolate, strawberry, banana and mint. Doctors say that ice cream is not very good for our health because there is too much sugar and fat in it.
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