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Объяснение:
Chose the correct item. 1) I will read this article when have / will have time. 2) Mum worried / would worry if you didn't call. 3) If I were you, I didn't / wouldn't complain. 4) If Dolly didn't leave / hadn't left in such a hurry, she would have remembered to switch off the light. 5) What will they do if / unless the weather is good tomorrow? 6) If only I wasn't / hadn't been so rude to her yesterday! 7) If / unless we pay the bill, they will cut off the phone. 8) If Jim didn't like his job, he did / would do something else. 9) Jane will / would walk the dog if she comes home early. 10) I wish I can / could invite all my friends for my birthday party.
DmitRi Mendeleev is a great Russian scientist of the 19th century.He is recognized as a great chemist who created the periodic classification of the elements.Dmitri Mendeleev was born in Tobolsk in 1834. At school,Dmiti succeed in mathematics,physics,and geography but was not good at languages.In 1855 he graduated from Pedagogical institute in St Peterburg with a gold medal for his achievements .In 1856,he received a degree in chemistry.Dmitri Mendeleev's contribution to the world's science was enormous. He was the first created the dependence of the qualities of the elements on their atomic weight.He forecast that the gaps in the table of elements would be filled in by elements whith had not been discovered yet.Dmitri Mendeleev was greatly honoured as a member of academies in many countries.Elements No 101 was named after him.