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/Интернет-экзамен в сфере профессионального образования

Интернет-экзамен в сфере профессионального образования

Специальность: 240302.65  – Технология электрохимических производств
Дисциплина: Английский язык
Время выполнения теста: 80 минут
Количество заданий: 34

Требования ГОС к обязательному минимуму
содержания основной образовательной программы

Индекс

Дисциплина и ее основные разделы

Всего часов

ГСЭ. Ф

Федеральный компонент

1260

ГСЭ. Ф.01

Иностранный язык :
Специфика артикуляции звуков, интонации, акцентуации и ритма нейтральной речи в изучаемом языке; основные особенности полного стиля произношения, характерные для сферы профессиональной коммуникации; чтение транскрипции. Лексический минимум в объеме 4000 учебных лексических единиц общего и терминологического характера. Понятие дифференциации лексики по сферам применения (бытовая, терминологическая, общенаучная, официальная и др.). Понятие о свободных и устойчивых словосочетаниях, фразеологических единицах. Понятие об основных способах словообразования. Грамматические навыки, обеспечивающие коммуникацию общего характера без искажения смысла при письменном и устном общении; основные грамматические явления, характерные для профессиональной речи. Понятие об обиходно-литературном, официально-деловом, научном стилях, стиле художественной литературы. Основные особенности научного стиля. Культура и традиции стран изучаемого языка, правила речевого этикета. Говорение. Диалогическая и монологическая речь с использованием наиболее употребительных и относительно простых лексико-грамматических средств в основных коммуникативных ситуациях неофициального и официального общения. Основы публичной речи (устное сообщение, доклад). Аудирование. Понимание диалогической и монологической речи в сфере бытовой и профессиональной коммуникации. Чтение. Виды текстов: несложные прагматические тексты и тексты по широкому и узкому профилю специальности. Письмо. Виды речевых произведений: аннотация, реферат, тезисы, сообщения, частное письмо, деловое письмо, биография.

340

Тематическая структура АПИМ

N ДЕ

Наименование
дидактической единицы ГОС

N за-
да-
ния

Тема задания

1

Лексика

1

Учебная лексика

2

Деловая лексика

3

Профессиональная лексика

4

Термины

2

Грамматика

5

Словообразование

6

Местоимения

7

Степени сравнения прилагательных и наречий

8

Артикли

9

Предлоги

10

Союзы

11

Глагол и его формы

12

Неличные формы глагола

13

Фразовые глаголы

14

Модальные глаголы

3

Речевой этикет

15

Бытовая сфера

16

Профессионально-деловая сфера

17

Учебно-социальная сфера

18

Социально-деловая сфера

4

Культура и традиции стран изучаемого языка

19

Великобритания

20

США

21

Канада

22

Выдающиеся личности англо-говорящих стран

5

Письмо

23

Оформление делового письма

24

Оформление электронного сообщения, факса

25

Оформление резюме, письма-заявления, письма-уведомления, письма-запроса

26

Оформление служебной записки, телефонограммы, повестки дня

6

Чтение

27

Ознакомительное чтение с целью определения истинности утверждения

28

Ознакомительное чтение с целью определения ложности утверждения

29

Поисковое чтение с целью определения наличия в тексте запрашиваемой информации

30

Поисковое чтение с целью определения наличия или отсутствия в тексте запрашиваемой информации

31

Изучающее чтение с элементами анализа информации

32

Изучающее чтение с элементами аннотирования

33

Изучающее чтение с элементами сопоставления

34

Изучающее чтение с выделением главных компонентов содержания текста

Демонстрационный вариант

ЗАДАНИЕ N 1 ( - выберите один вариант ответа)

Заполните пропуск
Her current interest was _____ and development, but she has changed fields.

ВАРИАНТЫ ОТВЕТОВ:

1)

resistance

2)

research

3)

residence

4)

reputation

ЗАДАНИЕ N 2 ( - выберите один вариант ответа)

Заполните пропуск
The person who handles applications for vacant posts is _____.

ВАРИАНТЫ ОТВЕТОВ:

1)

unskilled worker

2)

personal officer

3)

safety officer

4)

sales assistant

ЗАДАНИЕ N 3 ( - выберите один вариант ответа)

Заполните пропуск
The physician takes blood _____ to determine the urea and the sugar content of the blood.

ВАРИАНТЫ ОТВЕТОВ:

1)

sample

2)

example

3)

formule

4)

species

ЗАДАНИЕ N 4 ( - выберите один вариант ответа)

Заполните пропуск
_____ is a very small division of living matter, with one centre of activity, able alone or with others to perform all operators necessary for life.

ВАРИАНТЫ ОТВЕТОВ:

1)

Structure

2)

Tissue

3)

Cell

4)

Compound

ЗАДАНИЕ N 5 ( - выберите один вариант ответа)

Заполните пропуск
A shorter, more _____ meeting leaves time for work.

ВАРИАНТЫ ОТВЕТОВ:

1)

production

2)

productivity

3)

productiveness

4)

productive

ЗАДАНИЕ N 6 ( - выберите один вариант ответа)

Заполните пропуск
It was a good idea of _____ to go swimming this afternoon.

ВАРИАНТЫ ОТВЕТОВ:

1)

your

2)

yourself

3)

yours

4)

you

ЗАДАНИЕ N 7 ( - выберите один вариант ответа)

Заполните пропуск
My best friend is three years _______ than me.

ВАРИАНТЫ ОТВЕТОВ:

1)

young

2)

the youngest

3)

younger

4)

most young

ЗАДАНИЕ N 8 ( - выберите один вариант ответа)

Заполните пропуск
The oldest living tree in the world grows in _____ California.

ВАРИАНТЫ ОТВЕТОВ:

1)

the

2)

an

3)

4)

a

ЗАДАНИЕ N 9 ( - выберите один вариант ответа)

Заполните пропуск
She is going to study music _______ next year.

ВАРИАНТЫ ОТВЕТОВ:

1)

at

2)

to

3)

in

4)

-

ЗАДАНИЕ N 10 ( - выберите один вариант ответа)

Заполните пропуск
Begin with a minute _____ two of small talk.

ВАРИАНТЫ ОТВЕТОВ:

1)

or

2)

but

3)

and

4)

if

ЗАДАНИЕ N 11 ( - выберите один вариант ответа)

Заполните пропуск
My course _______ on Monday at 9.30.

ВАРИАНТЫ ОТВЕТОВ:

1)

are starting

2)

starts

3)

have started

4)

shall start

ЗАДАНИЕ N 12 ( - выберите один вариант ответа)

Заполните пропуск
_____ of her arrival, I went to see her.

ВАРИАНТЫ ОТВЕТОВ:

1)

Telling

2)

To tell

3)

Being told

4)

Told

ЗАДАНИЕ N 13 ( - выберите один вариант ответа)

Заполните пропуск
 ______ the sunset. It’s going to be really hot tomorrow.

ВАРИАНТЫ ОТВЕТОВ:

1)

Look for

2)

Look after

3)

Look at

4)

Look to

ЗАДАНИЕ N 14 ( - выберите один вариант ответа)

Заполните пропуск
Your face seems familiar to me. We _____ have met somewhere.

ВАРИАНТЫ ОТВЕТОВ:

1)

need

2)

must

3)

should

4)

ought

ЗАДАНИЕ N 15 ( - выберите один вариант ответа)

Заполните пропуск
Hostess: Are you enjoying yourselves?
Guest: ______________

ВАРИАНТЫ ОТВЕТОВ:

1)

What have you said?

2)

Yes, we are enjoying ourselves.

3)

I don’t know.

4)

Oh, yes, we’re having a fantastic time, thank you.

ЗАДАНИЕ N 16 ( - выберите один вариант ответа)

Выберите реплику, наиболее соответствующую ситуации общения

Shop assistant: .Can I help you?.

Customer: ._________________.

ВАРИАНТЫ ОТВЕТОВ:

1)

Fine.

2)

Oh, good. I. m so glad to have met you.

3)

No, it. s all right, thanks, I. m just looking.

4)

No, that's not necessary.

ЗАДАНИЕ N 17 ( - выберите один вариант ответа)

Заполните пропуск
Teacher: Well, good bye and the best of luck for the future.
Student: ___________________

ВАРИАНТЫ ОТВЕТОВ:

1)

Good luck.

2)

Let’s hope for the best.

3)

Good bye for ever.

4)

Thank you for teaching me, I really enjoyed your lessons.

ЗАДАНИЕ N 18 ( - выберите один вариант ответа)

Выберите реплику, наиболее соответствующую ситуации общения

Boss: .Do you see what I mean?.

Employee: .____________________________.

ВАРИАНТЫ ОТВЕТОВ:

1)

Yes, but I’m not sure I quite agree.

2)

Yes, and I don. t agree with you.

3)

Yes, do, please.

4)

I don. t think so.

ЗАДАНИЕ N 19 ( - выберите один вариант ответа)

Заполните пропуск
British Museum is situated in _____.

ВАРИАНТЫ ОТВЕТОВ:

1)

Edinburgh

2)

London

3)

Washington

4)

Cambridge

ЗАДАНИЕ N 20 ( - выберите один вариант ответа)

How many stripes are there on the US flag?

ВАРИАНТЫ ОТВЕТОВ:

1)

20

2)

17

3)

31

4)

13

ЗАДАНИЕ N 21 ( - выберите один вариант ответа)

Заполните пропуск
The largest city of Canada is _____.

ВАРИАНТЫ ОТВЕТОВ:

1)

Montreal

2)

Ottawa

3)

Toronto

4)

Vancouver

ЗАДАНИЕ N 22 ( - выберите один вариант ответа)

Заполните пропуск
Bill Gates is a founder of _____.

ВАРИАНТЫ ОТВЕТОВ:

1)

the first entertainment theme park

2)

the Metropoliten Museum

3)

the largest automobile corporation

4)

the Microsoft Corporation

ЗАДАНИЕ N 23 ( - выберите варианты согласно указанной последовательности)

Расположите части делового письма в правильном порядке
FOOD MACHINES

ВАРИАНТЫ ОТВЕТОВ:

1)

Dear Mr Sawyer,

2)

6 Pine Estate, Bedford Road, Bristol, UB28 12BP
Telephone 9 Fax 9
6 August 2005

3)

Thank you for your letter. I am afraid that we have a problem with your order.
Unfortunately, the manufacturers of the part you wish to order have advised
us that they cannot supply it until November. Would you prefer us to supply a
substitute, or would you rather wait until the original parts are again
available?

4)

James Sawyer, Sales Manager, Electro Ltd, Perry Road Estate,
Oxbridge UN54 42KF.

5)

I look forward to hearing from you.
Yours sincerely,
Simon Tramp
Sales Manager

ЗАДАНИЕ N 24 ( - выберите варианты согласно тексту задания)

Перед Вами конверт



Соотнесите информацию под определенным номером на конверте с тем, что она обозначает.

ВАРИАНТЫ ОТВЕТОВ:

A)

the street name in the mailing address

B)

the town the letter comes from

C)

the ZIP Code in the mailing address

D)

the addressee

E)

the ZIP Code in the return address

F)

the addressee. s company name

ЗАДАНИЕ N 25 ( - выберите один вариант ответа)

Определите, к какому виду делового документа относится представленный ниже отрывок

ВАРИАНТЫ ОТВЕТОВ:

1)

Letter of enquiry / request

2)

CV

3)

Contract

4)

Memo

ЗАДАНИЕ N 26 ( - выберите варианты согласно тексту задания)

Выберите слова или сочетания слов для заполнения пропусков так, чтобы они отражали особенности оформления служебной записки

 To  : Secretarial Supervisor
 (1) _____ : Claire McElroy
 (2) _____ : Demonstration of new office equipment

 The (3) _____ of Smart Equipment will visit us on 28 April to demonstrate their new computer and fax-machine which you are sure to be interested in.
 Please arrange the time to meet him so that all your staff could be present.
 
(4) _____

ВАРИАНТЫ ОТВЕТОВ:

A)

Subject

B)

C. M.

C)

From

D)

Sales Manager

ЗАДАНИЕ N 27 ( - выберите один вариант ответа)

Определите, является ли утверждение:

Vitamin and its provitamin are similar in chemical structure.

Прочитайте текст
VITAMINS AND PROVITAMINS

1.
Vitamin is any of several organic substances that usually are separated into water-soluble and fat-soluble groups. The substances commonly known as vitamins are diverse in chemical structure and function. Originally defined as organic compounds obtainable in a normal diet and capable of maintaining life, vitamins are distinct from carbohydrates, fats, and proteins in function, as well as in the quantities in which organisms require them.  If a vitamin is absent from the diet, a specific deficiency disease may develop.

2. The term “vitamin” originated from “vitamine,” a word first used in 1911 to designate a group of compounds considered vital for life; each was thought to have a nitrogen-containing component known as an amine. The final e of vitamine was dropped when it was discovered that not all of the vitamins contain nitrogen, and, therefore, not all are amines. The term “accessory food factor” sometimes is used instead of vitamin to refer to these substances.

3. Since they generally cannot be synthesized by an animal and must be obtained from the diet or from some synthetic source, vitamins are called essential nutrients. Vitamin C can be synthesized by some organisms in sufficient amounts so that the dietary requirement is eliminated; vitamin C usually is considered a vitamin, however, because it must be included in the diet of man. Vitamins are distinct from many other compounds, which, although indispensable for proper animal functions, can be synthesized in adequate quantities.

4. A provitamin is similar in structure to a specific vitamin and can be converted to it by a few metabolic reactions. Antivitamins are compounds that prevent the normal function of certain vitamins. Antivitamins may act by binding a vitamin, by destroying a vitamin, or by inhibiting the coenzyme function of a vitamin.
(Encyclopedia Britannica)

ВАРИАНТЫ ОТВЕТОВ:

1)

в тексте нет информации

2)

ложным

3)

истинным

ЗАДАНИЕ N 28 ( - выберите один вариант ответа)

Определите, является ли утверждение:

The term vitamin was originated from the word meaning. important for life..

Прочитайте текст
VITAMINS AND PROVITAMINS

1.
Vitamin is any of several organic substances that usually are separated into water-soluble and fat-soluble groups. The substances commonly known as vitamins are diverse in chemical structure and function. Originally defined as organic compounds obtainable in a normal diet and capable of maintaining life, vitamins are distinct from carbohydrates, fats, and proteins in function, as well as in the quantities in which organisms require them.  If a vitamin is absent from the diet, a specific deficiency disease may develop.

2. The term “vitamin” originated from “vitamine,” a word first used in 1911 to designate a group of compounds considered vital for life; each was thought to have a nitrogen-containing component known as an amine. The final e of vitamine was dropped when it was discovered that not all of the vitamins contain nitrogen, and, therefore, not all are amines. The term “accessory food factor” sometimes is used instead of vitamin to refer to these substances.

3. Since they generally cannot be synthesized by an animal and must be obtained from the diet or from some synthetic source, vitamins are called essential nutrients. Vitamin C can be synthesized by some organisms in sufficient amounts so that the dietary requirement is eliminated; vitamin C usually is considered a vitamin, however, because it must be included in the diet of man. Vitamins are distinct from many other compounds, which, although indispensable for proper animal functions, can be synthesized in adequate quantities.

4. A provitamin is similar in structure to a specific vitamin and can be converted to it by a few metabolic reactions. Antivitamins are compounds that prevent the normal function of certain vitamins. Antivitamins may act by binding a vitamin, by destroying a vitamin, or by inhibiting the coenzyme function of a vitamin.
(Encyclopedia Britannica)

ВАРИАНТЫ ОТВЕТОВ:

1)

истинным

2)

ложным

3)

в тексте нет информации

ЗАДАНИЕ N 29 ( - выберите один вариант ответа)

Определите, является ли утверждение:

Vitamin C participates in some enzyme-catalysed reactions.

Прочитайте текст
VITAMINS AND PROVITAMINS

1.
Vitamin is any of several organic substances that usually are separated into water-soluble and fat-soluble groups. The substances commonly known as vitamins are diverse in chemical structure and function. Originally defined as organic compounds obtainable in a normal diet and capable of maintaining life, vitamins are distinct from carbohydrates, fats, and proteins in function, as well as in the quantities in which organisms require them.  If a vitamin is absent from the diet, a specific deficiency disease may develop.

2. The term “vitamin” originated from “vitamine,” a word first used in 1911 to designate a group of compounds considered vital for life; each was thought to have a nitrogen-containing component known as an amine. The final e of vitamine was dropped when it was discovered that not all of the vitamins contain nitrogen, and, therefore, not all are amines. The term “accessory food factor” sometimes is used instead of vitamin to refer to these substances.

3. Since they generally cannot be synthesized by an animal and must be obtained from the diet or from some synthetic source, vitamins are called essential nutrients. Vitamin C can be synthesized by some organisms in sufficient amounts so that the dietary requirement is eliminated; vitamin C usually is considered a vitamin, however, because it must be included in the diet of man. Vitamins are distinct from many other compounds, which, although indispensable for proper animal functions, can be synthesized in adequate quantities.

4. A provitamin is similar in structure to a specific vitamin and can be converted to it by a few metabolic reactions. Antivitamins are compounds that prevent the normal function of certain vitamins. Antivitamins may act by binding a vitamin, by destroying a vitamin, or by inhibiting the coenzyme function of a vitamin.
(Encyclopedia Britannica)

ВАРИАНТЫ ОТВЕТОВ:

1)

ложным

2)

истинным

3)

в тексте нет информации

ЗАДАНИЕ N 30 ( - выберите один вариант ответа)

Определите, является ли утверждение:

Vitamins are synthesised by a man in sufficient amount.

Прочитайте текст
VITAMINS AND PROVITAMINS

1.
Vitamin is any of several organic substances that usually are separated into water-soluble and fat-soluble groups. The substances commonly known as vitamins are diverse in chemical structure and function. Originally defined as organic compounds obtainable in a normal diet and capable of maintaining life, vitamins are distinct from carbohydrates, fats, and proteins in function, as well as in the quantities in which organisms require them.  If a vitamin is absent from the diet, a specific deficiency disease may develop.

2. The term “vitamin” originated from “vitamine,” a word first used in 1911 to designate a group of compounds considered vital for life; each was thought to have a nitrogen-containing component known as an amine. The final e of vitamine was dropped when it was discovered that not all of the vitamins contain nitrogen, and, therefore, not all are amines. The term “accessory food factor” sometimes is used instead of vitamin to refer to these substances.

3. Since they generally cannot be synthesized by an animal and must be obtained from the diet or from some synthetic source, vitamins are called essential nutrients. Vitamin C can be synthesized by some organisms in sufficient amounts so that the dietary requirement is eliminated; vitamin C usually is considered a vitamin, however, because it must be included in the diet of man. Vitamins are distinct from many other compounds, which, although indispensable for proper animal functions, can be synthesized in adequate quantities.

4. A provitamin is similar in structure to a specific vitamin and can be converted to it by a few metabolic reactions. Antivitamins are compounds that prevent the normal function of certain vitamins. Antivitamins may act by binding a vitamin, by destroying a vitamin, or by inhibiting the coenzyme function of a vitamin.
(Encyclopedia Britannica)

ВАРИАНТЫ ОТВЕТОВ:

1)

истинным

2)

в тексте нет информации

3)

ложным

ЗАДАНИЕ N 31 ( - выберите один вариант ответа)

Укажите, какому из абзацев текста (1, 2, 3, 4) соответствует следующая идея:

Vitamins are different in their structures.

Прочитайте текст
VITAMINS AND PROVITAMINS

1.
Vitamin is any of several organic substances that usually are separated into water-soluble and fat-soluble groups. The substances commonly known as vitamins are diverse in chemical structure and function. Originally defined as organic compounds obtainable in a normal diet and capable of maintaining life, vitamins are distinct from carbohydrates, fats, and proteins in function, as well as in the quantities in which organisms require them.  If a vitamin is absent from the diet, a specific deficiency disease may develop.

2. The term “vitamin” originated from “vitamine,” a word first used in 1911 to designate a group of compounds considered vital for life; each was thought to have a nitrogen-containing component known as an amine. The final e of vitamine was dropped when it was discovered that not all of the vitamins contain nitrogen, and, therefore, not all are amines. The term “accessory food factor” sometimes is used instead of vitamin to refer to these substances.

3. Since they generally cannot be synthesized by an animal and must be obtained from the diet or from some synthetic source, vitamins are called essential nutrients. Vitamin C can be synthesized by some organisms in sufficient amounts so that the dietary requirement is eliminated; vitamin C usually is considered a vitamin, however, because it must be included in the diet of man. Vitamins are distinct from many other compounds, which, although indispensable for proper animal functions, can be synthesized in adequate quantities.

4. A provitamin is similar in structure to a specific vitamin and can be converted to it by a few metabolic reactions. Antivitamins are compounds that prevent the normal function of certain vitamins. Antivitamins may act by binding a vitamin, by destroying a vitamin, or by inhibiting the coenzyme function of a vitamin.
(Encyclopedia Britannica)

ВАРИАНТЫ ОТВЕТОВ:

1)

3

2)

2

3)

1

4)

4

ЗАДАНИЕ N 32 ( - выберите один вариант ответа)

Укажите, какому из абзацев текста (1, 2, 3, 4) соответствует следующая идея:

Vitamins can be destroyed by some compounds.

Прочитайте текст
VITAMINS AND PROVITAMINS

1.
Vitamin is any of several organic substances that usually are separated into water-soluble and fat-soluble groups. The substances commonly known as vitamins are diverse in chemical structure and function. Originally defined as organic compounds obtainable in a normal diet and capable of maintaining life, vitamins are distinct from carbohydrates, fats, and proteins in function, as well as in the quantities in which organisms require them.  If a vitamin is absent from the diet, a specific deficiency disease may develop.

2. The term “vitamin” originated from “vitamine,” a word first used in 1911 to designate a group of compounds considered vital for life; each was thought to have a nitrogen-containing component known as an amine. The final e of vitamine was dropped when it was discovered that not all of the vitamins contain nitrogen, and, therefore, not all are amines. The term “accessory food factor” sometimes is used instead of vitamin to refer to these substances.

3. Since they generally cannot be synthesized by an animal and must be obtained from the diet or from some synthetic source, vitamins are called essential nutrients. Vitamin C can be synthesized by some organisms in sufficient amounts so that the dietary requirement is eliminated; vitamin C usually is considered a vitamin, however, because it must be included in the diet of man. Vitamins are distinct from many other compounds, which, although indispensable for proper animal functions, can be synthesized in adequate quantities.

4. A provitamin is similar in structure to a specific vitamin and can be converted to it by a few metabolic reactions. Antivitamins are compounds that prevent the normal function of certain vitamins. Antivitamins may act by binding a vitamin, by destroying a vitamin, or by inhibiting the coenzyme function of a vitamin.
(Encyclopedia Britannica)

ВАРИАНТЫ ОТВЕТОВ:

1)

4

2)

2

3)

1

4)

3

ЗАДАНИЕ N 33 ( - выберите один вариант ответа)

Ответьте на вопрос:

Why is vitamin C treated as a vitamin?

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VITAMINS AND PROVITAMINS

1.
Vitamin is any of several organic substances that usually are separated into water-soluble and fat-soluble groups. The substances commonly known as vitamins are diverse in chemical structure and function. Originally defined as organic compounds obtainable in a normal diet and capable of maintaining life, vitamins are distinct from carbohydrates, fats, and proteins in function, as well as in the quantities in which organisms require them.  If a vitamin is absent from the diet, a specific deficiency disease may develop.

2. The term “vitamin” originated from “vitamine,” a word first used in 1911 to designate a group of compounds considered vital for life; each was thought to have a nitrogen-containing component known as an amine. The final e of vitamine was dropped when it was discovered that not all of the vitamins contain nitrogen, and, therefore, not all are amines. The term “accessory food factor” sometimes is used instead of vitamin to refer to these substances.

3. Since they generally cannot be synthesized by an animal and must be obtained from the diet or from some synthetic source, vitamins are called essential nutrients. Vitamin C can be synthesized by some organisms in sufficient amounts so that the dietary requirement is eliminated; vitamin C usually is considered a vitamin, however, because it must be included in the diet of man. Vitamins are distinct from many other compounds, which, although indispensable for proper animal functions, can be synthesized in adequate quantities.

4. A provitamin is similar in structure to a specific vitamin and can be converted to it by a few metabolic reactions. Antivitamins are compounds that prevent the normal function of certain vitamins. Antivitamins may act by binding a vitamin, by destroying a vitamin, or by inhibiting the coenzyme function of a vitamin.
(Encyclopedia Britannica)

ВАРИАНТЫ ОТВЕТОВ:

1)

It is a water-soluble substance.

2)

It can not be synthesised by a man.

3)

It is distinct from other organic compounds.

4)

It should be included in a diet.

ЗАДАНИЕ N 34 ( - выберите один вариант ответа)

Определите основную идею текста

Прочитайте текст
VITAMINS AND PROVITAMINS

1.
Vitamin is any of several organic substances that usually are separated into water-soluble and fat-soluble groups. The substances commonly known as vitamins are diverse in chemical structure and function. Originally defined as organic compounds obtainable in a normal diet and capable of maintaining life, vitamins are distinct from carbohydrates, fats, and proteins in function, as well as in the quantities in which organisms require them.  If a vitamin is absent from the diet, a specific deficiency disease may develop.

2. The term “vitamin” originated from “vitamine,” a word first used in 1911 to designate a group of compounds considered vital for life; each was thought to have a nitrogen-containing component known as an amine. The final e of vitamine was dropped when it was discovered that not all of the vitamins contain nitrogen, and, therefore, not all are amines. The term “accessory food factor” sometimes is used instead of vitamin to refer to these substances.

3. Since they generally cannot be synthesized by an animal and must be obtained from the diet or from some synthetic source, vitamins are called essential nutrients. Vitamin C can be synthesized by some organisms in sufficient amounts so that the dietary requirement is eliminated; vitamin C usually is considered a vitamin, however, because it must be included in the diet of man. Vitamins are distinct from many other compounds, which, although indispensable for proper animal functions, can be synthesized in adequate quantities.

4. A provitamin is similar in structure to a specific vitamin and can be converted to it by a few metabolic reactions. Antivitamins are compounds that prevent the normal function of certain vitamins. Antivitamins may act by binding a vitamin, by destroying a vitamin, or by inhibiting the coenzyme function of a vitamin.
(Encyclopedia Britannica)

ВАРИАНТЫ ОТВЕТОВ:

1)

Antivitamins prevent normal functions of vitamins and destroy them.

2)

There exist water-soluble and fat-soluble vitamins.

3)

Being essential for human health vitamins should be obtainable from the diet and other sources.

4)

Not all vitamins are amines.