Прочитайте текст. Составьте 5 вопросов к тексту. Dmitry Ivanovich Mendeleyev
Dmitry Ivanovich Mendeleyev is a famous Russian chemist. He is best known for his development of the periodic table of the properties of the chemical elements. This table displays that elements' properties are changed periodically when they are arranged according to atomic weight.
Mendeleyev was born in 1834 in Tobolsk, Siberia. He studied chemistry at the University of St. Petersburg, and in 1859 he was sent to study at the University of Heidelberg. Mendeleyev returned to St. Petersburg and became Professor of Chemistry at the Technical Institute in 1863. He became Professor of General Chemistry at the University of St. Petersburg in 1866. Mendeleyev was a well-known teacher, and, because there was no good textbook in chemistry at that time, he wrote the two-volume «Principles of Chemistry» which became a classic textbook in chemistry.
In this book Mendeleyev tried to classify the elements according to their chemical properties. In 1869 he published his first version of his periodic table of elements. In 1871 he published an improved version of the periodic table, in which he left gaps for elements that were not known at that time. His table and theories were proved later when three predicted elements: gallium, germanium, and scandium were discovered.
Mendeleyev investigated the chemical theory of solution. He found that the best proportion of alcohol and water in vodka is 40%. He also investigated the thermal expansion of liquids and the nature of petroleum.
In 1893 he became director of the Bureau of Weights and Measures in St. Petersburg and held this position until his death in 1907.
Dinosaurs
The word "dinosaur" comes from the Greek language and means "terrible lizard".
Dinosaurs lived on our planet a very long time ago. The oldest known dinosaur is Eoraptor, a meat-eater that lived 228 million years ago. People believe that dinosaurs lived on the Earth until around 66 million years ago.
Some dinosaurs ate meat and others ate plants. Most dinosaurs hatched from eggs, and they could not fly or live in water. Some dinosaurs walked on two legs, while others walked on all four legs. Some had horns and spikes, others had thick bumpy skin, and some even had feathers.
The biggest dinosaurs were over 30 metres long and about 20 metres tall. The largest dinosaur was the sauropod. The smallest dinosaurs were the size of a chicken.
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Динозавры
Слово «динозавр» происходит из греческого языка и означает «ужасная ящерица».
Динозавры жили на нашей планете очень давно. Самый старый известный динозавр - эораптор, плотоядный (мясоед), который жил 228 миллионов лет назад. Люди полагают, что динозавры жили на Земле еще 66 миллионов лет назад. (потом вымерли)
Некоторые динозавры питались мясом, другие ели растения. Большинство динозавров вылуплялись из яиц, не могли летать или жить в воде. Некоторые динозавры ходили на двух ногах, в то время как другие ходили на всех четырех ногах. У некоторых были рога и шипы, у других — толстая бугристая кожа, а у некоторых даже были перья.
Самые большие динозавры были длиной более 30 метров и высотой около 20 метров. Самым крупным динозавром был зауропод. Самые маленькие динозавры были размером с курицу.