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A kite catches the wind. Tugging at the string, it pulls upward, dip- ping and swaying. The string unwinds. The kite climbs higher and
higher into the blue. Its colorful shape looks beautiful against the sky.
Flying the kite is a fun day to spend a spring day.
People around the world have been flying kites for centuries. In fact,
kites were invented over two thousand years ago.
Kites have always been used in modern warfare. Before airplanes were
invented, cameras were tied to kites. They were sent high in the air to take
pictures. This was a way of gathering information about enemy forces.
Kites have always been used to carry radio equipment up into the air.
This made the signals easier to send and receive. In World War Il, kites
were used as targets for shooting practice. Kites were also included as part
of the emergency kit in lifeboats. People stranded in the lifeboats could fly
the kites. Searchers would see the kites and come to their rescue.
Kites have been used in many other ways. People have used kites
to carry instruments high into the clouds. There the instruments mea-
sured temperature and wind speed. Sometimes the kites could not fly
high enough. When this happened, they were sometimes tied together in
trains. First one kite was sent sailing on a long string. This string was tied
to a second kite. This kite helped to lift the first kite even higher. A third
and even a fourth kite might be added to the train.
One famous event involving a kite was Benjamin Franklin's experi-
ment. Franklin wanted to show that lighting was a form of electricity. He
thought that if he sent a kite up into the clouds he could find out for
sure. Franklin made his kite carefully. He used two lightweight sticks.
He covered the sticks with a square of silk fabric. He attached an iron wire
to the frame of the kite. Then he attached a long string. Near the end of
this string, Franklin tied a brass key. Then Franklin tied a piece of silk
ribbon to the end of the string. He would use this ribbon to hold onto
the kite. He knew that silk would not conduct electricity very well. He
hoped it would keep him safe. On a stormy afternoon Franklin set out to try his kite. A brisk breeze
was blowing. Franklin's kite rose quickly into the dark clouds. Raindrops
were pelting down. As a safety measure, Franklin stood in the doorway
of a barn. Water is a good conductor of electricity. He knew he needed
to keep the silk ribbon dry. Franklin reached out and tapped the key with
his finger. Sparks flew! It was electricity!
Franklin was happy with the success of his experiment. He was also
very lucky. He could have been badly injured or even killed. It is very
important to remember that you should never fly a kite on a stormy day.
Metal should never be used in the making of a kite. Also, kites should
never be flown around power lines.

10
Bright kites appear nice high in the air.
1) True
2) False
3) Not stated
OTBeT:

11
Kites have always been used in photography.
1) True
2) False
3) Not stated
OTBET:

12
The first radio equipment was carried by kites.
1) True
2) False
3) Not stated
OTBET:

13
Kites were put in lifeboats to help in navigation.
1) True
2) False
3) Not stated
OTBET:

14
Kite trains fly higher.
1) True
2) False
3) Not stated
OTBET:

Показать ответ
Ответ:
podvorskij
podvorskij
04.06.2021 07:09
1. The aim of positive economics is to explain how society makes decisions about consumption, production, and exchange of goods.
2.  Whatever our political persuasion, whatever our view about what we would like to happen or
what we would regard as 'a good thing', in the first instance we have to be
concerned with how the world actually works.
3. Although competent and comprehensive research can in principle resolve many of the
outstanding issues in positive economics, no corresponding claim can be made
about the resolution of disagreement in normative economics.
4. The elderly have very high medical expenses compared with the rest of the population, and the government should subsidise health bills of the aged.
5. It is a statement about how the world works, and we can imagine a research programme
that could determine whether or not it is correct.
 6. The second part of the proposition - the recommendation about what the government should do - could never be 'proved to be correct or false by any scientific research investigation.
 7. Many people can share this subjective judgement, for example those people who believe that all citizens alive today should be able to purchase roughly equal amounts of luxury and recreational goods after paying for the necessities of life.
8. But other people might reasonably disagree.
9. You might believe that it is more important to devote society's scarce resources to
improving the environment. 
0,0(0 оценок)
Ответ:
Roserum
Roserum
11.06.2021 00:38
Two new contracts have been signed this week .
Вопрос:  When were two new contracts signed ? - это классический случай, здесь все  верно, дело в том что специальные вопросы, которые начинаются с when предполагают Past Simple (Active или Passive, но Past Simple)
Учебники говорят, что вопрос с When не бывает в Present Perfect! поэтому в первом предложении тоже по идеальной схеме мы должны написать When were many guests invited to my birthday party? при ответе  Many guests have been invited to my birthday party today.
Цитата из учебника английского языка "В Present Perfect нельзя задать вопросы, которые начинаются с When или его производного At what time, так как в ответе на этот вопрос будет содержаться упоминание о дате". ( я Вам в личку скину ссылочку на эту страничку , и Вы разберетесь)
0,0(0 оценок)
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