On the evening of 26 September 2019, the streets of Geneva in Switzerland went dark. This usually happens when there is a problem with the electricity, but this time the lights were turned off to allow people to go outside and look at the stars. This is often impossible in a city because of light pollution. Light pollution is when light from streetlamps or buildings makes the night less dark. There are many reasons why this is a problem. Animals sleep less because they think it is still daytime. Birds that fly to warmer countries in the autumn need to see the moon and stars to find their way, but light pollution makes this difficult. Insects and birds in cities often fly towards lights at night, crash into buildings and die. Light pollution is also bad for us. It can stop us sleeping and give us headaches. Also, we don't see the same sky that people in the past did. This means we almost never see one of the greatest sights in the world: the millions of stars in our galaxy, the Milky Way. Hundreds of thousands of people have never seen it in their lives. However, it is not difficult to do a few things to reduce light pollution: we can all turn lights off when we don't need them and we can cover our windows with curtains. If there is less light pollution. we will once again be able to enjoy the beauty of the night sky.

Давайте разберем вопросы и выберем правильные ответы на основе текста. **14. The lights were switched off in Geneva on 26 September** Для ответа на этот вопрос посмотрим на начало текста: "the lights were turned off to allow people to go outside and look at the stars." Правильный ответ: **C** - to make it easier for people to see the stars. **15. Light pollution is a problem** Следующая часть текста говорит, что световое загрязнение мешает насекомым и птицам, а также влияет на сна людей. Также упоминается, что световое загрязнение мешает видеть ночное небо. Правильный ответ: **A** - when the night is too dark. **16. Light pollution is bad for some birds because** Текст упоминает, что птицы теряют ориентиры на небе, такие как луна и звезды, из-за светового загрязнения. Правильный ответ: **C** - they can't see the sky to find their way. **17. The writer of the article thinks** Текст указывает, что световое загрязнение мешает людям видеть звезды, которые видели их предки. Правильный ответ: **B** - it is a pity that people today can’t enjoy the night sky. **18. The writer says that** Текст говорит о простых способах уменьшения светового загрязнения, таких как выключение света и занавески на окнах. Правильный ответ: **A** - there aren’t many things we can do to stop light pollution. Таким образом, мы разобрали каждый вопрос и выбрали наиболее подходящий ответ на основе предоставленного текста.