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Вопрос № 911969 - Английский язык

Расположите пропущенные предложения в таком порядке, чтобы получился связный текст.
1_______. Most, however, become laboratory findings and for the present, at least, have no practical application. 2_______. The million or so organic compounds now known and characterized were synthesized in the laboratories of the world in the past 150 years.
3_______.
Many other organic compounds are prepared from these materials after they are separated into their constituents. 4_______.
Варианты ответов
  • From the simplest hydrocarbon, methane, come such products as plastic vessels, acrylic fibers, vinyl paints, etc
  • A very few number may provide an important explanation of the mechanism of fundamental chemical reaction in the human body
  • The preparation of new and different compounds through chemical reaction is called organic synthesis
  • Complex mixtures of hydrocarbon compounds containing only carbon and hydrogen occur in very large quantities in nature as petroleum and natural gas
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Вопрос задал(а): Анонимный пользователь, 13 Ноябрь 2020 в 16:10
На вопрос ответил(а): Анастасия Степанова, 13 Ноябрь 2020 в 16:10

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Вопрос № 911968

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1_______. Although there are 89 other naturally occurring elements, the number of known carbon compounds is many times greater than that of the known compounds which contain no carbon. 2_______. The name “organic” comes from the past when chemical compounds produced from ones-living matter were called “organic” and all other compounds were called inorganic.
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Вопрос № 911967

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1_______. If all the carbon and carbon compounds were suddenly removed from the earth it would look like the surface of the Moon. 2_______. In an ordinary pencil, for example, the inside of the pencil made from graphite, which is an elementary form of carbon, the wood and the paint on the surface of the pencil are all carbon or carbon compounds. The paper of a book, the cover are also made of carbon compounds. All of the clothes one wears including shoes cannot exist without carbon. 3_______. Fuels, foods and many drugs are mostly made of carbon compounds. 4_______.
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Вопрос № 911970

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Вопрос № 911971

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Вопрос № 911973

Прочитайте текст.
The following ailments are prone to occur in cigarette smokers:
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Вопрос № 911975

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Tobacco claims 390,000 lives a year, 90,000 more than earlier estimates. Two-thirds of those deaths result from cardiovascular disease, lung cancer and chronic respiratory ailments like emphysema. The average male smoker is 22 times as likely to die from cancer is a nonsmoker. On the bright side, the USA has made substantial strides in curtailing cigarette use. Only 29 % of adults now light up, down from 40 % in 1965.
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