Доказать амфотерность аминокислоты аланин - №19057514

Доказать амфотерность аминокислоты аланин
- Предмет:
  Химия
- Автор:
  isidrofranklin
- 6 лет назад

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спасибо)
- Автор:
  kody
- 6 лет назад
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A few years ago I lost all my money in some business operations. So I decided to go to Lympne and write a play. This unwritten drama was my little reserve for a rainy day. This rainy day had come.
I got a cottage near the sea. The window at which I worked looked over the marsh, but the view on the marsh was beautiful. It was from this window that I first saw Mr. Cavor. He was a short man. He was gesticulating with his hands and often looked at his watch. This happened on my first day in Lympne. Next evening the man reappeared, and again the next evening and almost every evening when there was no rain.
On the fourteenth evening when he appeared I went to the place where he always stopped. “One moment, sir,” said I, “is it your time for exercises?” “Yes, it is. I come here to look at the t”. We talked a little, then wished each other good evening and both went our way.
(After H. G. Wells)
_____________
marsh – болото

I. Complete the statements according to the text.
1. The author wanted to write a play because lie...
I ) needed money.
2) had nothing to do.
3) wanted to open some business.
4) wanted to become famous.
2. The author first saw Mr. Cavor...
I) when it was raining hard.
2) from the window of his study.
3) on his second day in Lympne.
4) when he was walking over the marsh.
3. The author first talked to Mr. Cavor...
1) two weeks later.
2) three days later.
3) after the sunrise.
4) the same day when lie saw him.

II. Choose the correct article.
After our first talk I knew little about Mr. Cavor. But I understood that he was ... serious man.
1) the 2) - 3) a 4) an

III. Choose the correct variant.
The author lost ... money in some business operations.
1) little 2) a little 3) many 4) much

IV. ‘For a rainy day’ means:
1) на случай дождя
2) на всякий случай
3) на черный день
4) на будущее
- Предмет:
  Английский язык
- Автор:
  arthurlove
- 6 лет назад
- Ответов:
  
  1
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One evening Mr. Cavor invited me to see his work and l went to his house. It was large and simply furnished. Mr. Cavor had no servants, there were only his three assistants who helped him in his work. But all the intellectual work was done by Mr. Cavor. The object of Mr. Cavor's research was a substance that had to be «opaque» to all forms of radiant energy. “Radiant energy”, he told me “is something like light, or heat, or Rontgen rays.” He thought he would be able to make such substance with the help of a new element which he had found.
Since that day we met almost every evening. Mr. Cavor lectured me on physics and I learnt a lot of interesting and unusual things.
His ideas interested me very much and I could not work at my play any longer. My head was busy with other things. I thought how to apply this substance to every branch of industry. Some days later I went to Mr. Cavor and told him that I wanted to be his fourth assistant.
substance – вещество
opaque – непроницаемый
rays – лучи

I. Complete the statements according to the text.
1. The author went to Mr. Cavor's laboratory because...
1) he wanted to know everything about Mr. Cavor's invention.
2) Mr. Cavor invited him.
3) he wanted to speak to Mr. Cavor about the play he was writing.
4) he wanted to write an article about Mr. Cavor.
2. Mr. Cavor's object of research work was...
1) a kind of radiant energy.
2) light, heat and Rontgen rays.
3) a new element.
4) a new substance.
3. Since the day of the author's visit to Mr. Cavor's laboratory...
1) the author got very interested in Mr. Cavor's invention and wanted to describe it in his play.
2) the author could not work at his play any longer.
3) Mr. Cavor asked him to become his fourth assistant.
4) they seldom met.

II. Choose the correct articles.
... possibilities of ... Substance opaque to heat and gravitation had no limits.
1) a, the 2) -, the 3) the, a 4) the, the

III. Change the sentence from Passive into Active:
All the intellectual work was done by Mr. Cavor.
1) Mr. Cavor had done all the intellectual work.
2) Mr. Cavor has done all the intellectual work.
3) Mr. Cavor did all the intellectual work.
4) Mr. Cavor was doing all the intellectual work.

IV. ‘To apply’ means:
1) to use 2) to sell 3) to offer 4) to examine
- Предмет:
  Английский язык
- Автор:
  semaj
- 6 лет назад
- Ответов:
  
  1
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The University of Cambridge was founded in the twelfth century. It was formed on the model of European continental universities, in particular that of Paris. Until the fifteenth century the history of Cambridge was not as significant as that of Oxford. But by the end of the seventeenth century the University was the home of Isaac Newton - professor of mathematics from 1669 till 1702 whose influence was deep and permanent. At that time serious tests were offered to the candidates for degrees. During the early part of the nineteenth century examinations were greatly improved and written examinations were more often used than oral ones.
In the 19th century there were built a number of laboratories for natural sciences, among them the Cavendish Laboratory opened in 1871, which was organized by the well-known Scottish mathematician and physicist James Clerk Maxwell. It was named after the English scientist of the 18th century Henry Cavendish.
Today it is one of the greatest physical laboratories known throughout the world. The Laboratory is widening its contacts with the leading research centres in other countries.

I. Complete the statements according to the text.
1. The University of Cambridge was founded according to...
1) the model of Oxford University.
2) the model of European continental universities.
3) the plan of Isaac Newton.
4) the plan of Henry Cavendish.
2. In the 19th century the candidates for degrees more often had to...
1) write serious tests.
2) take oral examinations.
3) work in one of the laboratories of the University.
4) take pail in some research projects.
3. The Cavendish Laboratory is known throughout the world because...
1) James Clerk Maxwell and Henry Cavendish worked there.
2) it is more than one hundred years old now.
3) it has contacts with the leading research centres in other countries.
4) many research conferences were held there.

II. Find the right statement.
1. 1) Cambridge University was as significant as Oxford from the very beginning of its foundation.
2) Cambridge University was not very significant at the time of its foundation.
3) Cambridge University was not very significant until the laboratories for natural science had been built.
4) Cambridge University was not as significant as that of Paris.
2. 1) The Cavendish Laboratory was named after the German scientist of the 18th century Henry Cavendish.
2) The Cavendish Laboratory was named after the English scientist of the 17th century Henry Cavendish.
3) Tile Cavendish Laboratory was named after the English scientist of the 18th century James Maxwell.
4) The Cavendish Laboratory was named after the English scientist of the 18th century Henry Cavendish.

III. Find the wrong variant.
1) In the 19th century new laboratories for natural sciences were built.
2) In the 19th century there were many laboratories for natural sciences.
3) In the 19th century a lot of laboratories for natural sciences were opened.
4) In the 19th century a few laboratories for natural sciences were closed.
- Предмет:
  Английский язык
- Автор:
  william86
- 6 лет назад
- Ответов:
  
  1
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составить электронную конфигурацию элемента номер 18
- Предмет:
  Химия
- Автор:
  santiago6rvn
- 6 лет назад
- Ответов:
  
  2
- Смотреть

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