Нет проверочного слова! это СЛОВАРНОЕ СЛОВО!! его нужно запомнить!!!!
<span>Let's talk about a fantastic thing: computer. Can you imagine our life now without it? It's almost not possible! Well, between this super machine stand a lot of mechanical schemes. For example the processor: a hard thing! But for sure: we can't imagine our life without the computer. </span>
Очень хороший смешной рассказ