Завдання 2.

Дайте відповіді на наступні запитання:

What is the difference between “artificial satellite” and “natural satellite”?
What natural satellite of the Earth do you know?
What can you say about the Moon? (Its surface, atmosphere, climatic conditions, size, distance from the Earth).
When and where was the first artificial satellite launched?
When did the first astronauts land on the Moon? What do you know about them?
What information about the Moon has been received since the beginning of its exploration?
Why is it necessary to carry out research dealing with the Moon and other celestial bodies?
What kind of orbit is called “Keplerian orbit”?
What phenomenon is called “disturbance”?
What is the result of atmosphere resistance on the moving body?

Завдання 3.

Переробіть речення, використовуючи інфінітивний зворот “Complex Subject”:

It is considered that artificial satellites are very important for space exploration.
It is supposed that Jupiter and Saturn have no hard surface at all.
It seems that this satellite has already been put into the orbit.
It is known that acceleration of the satellite to the circular velocity is the necessary condition for its injection to orbit.
It is likely that the engineers will use this formula for calculating the satellite speed.
It is known that the first artificial satellite was launched into space in the former Soviet Union.
It seems that the engineers have already calculated this orbit.
It is known that Americans were the first to land on the Moon.
It is unlikely that this satellite will be launched into space in the nearest future.
It is believed that this satellite has a lot of advantages over its previous counterparts.

Завдання 4.

Прочитайте, зверніть увагу на утворення множини деяких іменників:

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