Вместо пропусков вставьте необходимые по смыслу предлоги: every substance has a melting point and a boiling point. the former is the temperature which it changes solid liquid. the latter is the temperature it changes liquid gas. these changes are called changes . sometimes the properties a substance change when it changes its state. example, if the temperature oxygen falls below -183 c, it changes a colourless gas a bluish liquid, which is highly magnetic.

Every substance has a melting point and a boiling point. The former is the temperature at which it changes from solid to liquid. The latter is the temperature at which it changes from liquid to gas. These changes are called changes of state. Sometimes the properties of a substance change when it changes its state. For example, if the temperature of oxygen falls below -183 C, it changes from a colourless gas to a bluish liquid, which is highly magnetic.

According to the calendar, autumn comes in September. In Central Russia, September is called the "thoughtful month". Days are quiet, the air is clear, the horizon seems to have moved away, revealing the beauty of autumn nature. With trees, even in windless hours, fly yellow leaves. Nature seems to be thinking in anticipation of big changes…  

 

But this month still combines the signs of summer and autumn. When it's warm, you forget that summer has passed. And the wind will blow, the rains will pour, and it seems that there will always be cold, bad weather. The sun is showing less and less, the wind is getting colder. Clouds cover the sky. Autumn rains begin. Sun waiting as rewards, but in the morning looked out the window, you see a small gray rain

Московский Кремль
The Moscow Kremlin is one of the most famous landmarks of Russia and the symbol of former Soviet authority. It is a long red brick wall with 20 towers, which were built at the end of the 15th century on the order of Ivan the Great. The most renowned and important tower is the Spasskaya Tower, which leads to Red Square. The tower was put up in 1491 by an Italian architect Pietro Solario. It has a belfry, a ruby star and the chimes, which are broadcast by radio as a time signal to the whole nation. Other famous towers are the Nikolskaya, Troitskaya, Kutafya and Borovitskaya. The name Kremlin means “fortress”. This historic fortified complex is situated at the heart of Moscow and overlooks the Moskva River and Red Square. It is the best known kremlin of Russia. Apart from the walls and towers it includes five strikingly beautiful palaces and four cathedrals. All of them are open to public. The heart of the Kremlin is the Cathedral Square with the main church of Moscow – the Cathedral of Dormition, where all the tsars were once crowned. The church has a massive limestone facade and five golden domes. Other notable structures include two domestic churches and the Bell Tower of Ivan the Great. The largest bell in the world is also situated here. It’s called the Tsar Bell. The oldest structure within the Kremlin walls is the Palace of Facets, which holds the imperial thrones. The other old building is the house of the royal family – the Terem Palace. Both these palaces are linked by the Grand Kremlin Palace. There are also several interesting museums inside the Kremlin walls. For example, the Arsenal, which was originally built for Peter the Great, and the Armoury building, which houses Russian state regalia and Diamond fund. At the moment, the complex of Kremlin serves as the official residence of the President of the Russian Federation.