Ребята! Давайте попробуем подготовиться к экзамену по английскому языку и заодно узнаем много полезной информации о химических элементах.
Преобразуйте, если необходимо, слова в скобках, так чтобы они грамматически и лексически соответствовали содержанию текста.
- The exact ………(discover) of mercury isn't known, as many old cultures already knew about it.
- Mercury is……… (unique) because it's the only metal that is liquid at room temperature.
- People called it "quicksilver" due to its fast……… (move) and shiny look.
- Its high ………. (dense) made it very useful for tools like thermometers and barometers.
- Sadly, the full……… (toxic) of mercury was not known for many years, leading to dangerous uses.
- Mercury was …….. (instrument) in old gold mining because it could mix with the gold.
- It……… (excel) carries electricity, which is why it was used in some old switches.
- Today, we know mercury has a ……… (detriment) effect on our environment and animals.
- Because of this, the ……… (regulate) of mercury use is now very strict everywhere.
- Its……… (persist) in nature and bad effects on brains mean we must handle it very carefully.