Английский язык. I курс. - 14 стр.

1. Molecular crystals are solids constructed of molecules held together by relatively weak
forces. 2. A body moving with a certain velocity carries within itself kinetic energy of motion.
3. While absorbing the energy of cosmic rays the upper atmosphere becomes radioactive. 4.
Unless properly treated the metal must not be applied for space technology.

      III. Перепишите следующие предложения, подчеркнув в каждом из них модальный
глагол или его эквивалент. Переведите предложения на русский язык.
1. Energy can exist in many forms and each form can be trasformed into the other.
2.These metal parts had to be subjected to X-ray examination. 3. The chemists may use the
reactor to analyse various substances.

     IV. Прочитайте и устно переведите с 1-го по 3-й абзацы текста. Перепишите и
письменно переведите 2-й и 3-й абзацы.

                                 D. I. Mendeleyev ( 1834 - 1907 )

       1. In 1964 the name of Mendeleyev was added to the list of the greatest geniuses - Euclid,
Archimedes, Copernicus, Galilei, Newton. D.I.Mendeleyev, the explorer of
nature, is the greatest chemist of the world. The Mendeleyev system has served for almost 100
years as a key to discovering new elements and it has retained its key capacity until now.
       2. D.I.Mendeleyev was the fourteenth, and last child of the Director of the Gymnasium in
Tobolsk. At 16 he was taken by his mother to St. Petersburg to get higher education. He entered
the Pedagogical Institute where his father has also studied. In 1856 he took a degree in
chemistry and in 1859 he was sent abroad for two years for further training. He returned to St.
Petersburg in 1861 as Professor of Chemistry.
       3. In 1868 Mendeleyev began to write a great textbook of chemistry known as the
“Principles of Chemistry”. He tried to find some system of classifying the elements. This led
him to formulate the Periodic Law, which earned him lasting international fame. He presented it
to the Russian Chemical Society in 1868 and published it in 1869.
       4. In this paper he set out clearly his discovery that if the elements are arranged in order
of their atomic weights, chemically related elements appear at regular intervals. The greatness
of Mendeleyev’s achievement lies in the fact that he had discovered a generalization that not
only unified an enormous amount of existing information but pointed the way to further
progress.

      V. Прочитайте 4-й абзац текста и вопрос к нему. Из приведенных вариантов ответа
укажите номер предложенияб содержащего правильный ответ на поставленный вопрос:
      What can you say about the greatness of Mendeleyev’s discovery?
1. The greatness of Mendeleyev’s achievement lies in the fact that his Periodic Table pointed
the way to further progress in chemistry.
2. Mendeleyev had discovered several new elements.
3. Mendeleyev created the system of classifying chemical elements.