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The reading passage describes three theories that explain the possible sources of the strange sounds called 'quackers' detected by Russian submarines while patrolling the North Atlantic and the Arctic Ocean during 1960-1980.

The reading passage describes three theories that explain the possible sources of the strange sounds called 'quackers' detected by Russian submarines while patrolling the North Atlantic and the Arctic Ocean during 1960-1980. KwY30
The reading passage describes three theories that explain the possible sources of the strange sounds called 'quackers' detected by Russian submarines while patrolling the North Atlantic and the Arctic Ocean during 1960-1980. Each one of these theories is rejected by the lecturer as unlikely causes of the sounds. The first theory presented by the reading states that those sounds were made by orca whales which the professor refutes by pointing out that orca whales live on the surface of the ocean while the submarines move around deep in the ocean, therefore, the crews could not have heard them. Besides, orca whales would have been detected by the sonar as solid moving objects, which was not the case. The second theory in the passage claims that giant squids could have emitted the sounds. But the lecturer argues that there is a contradictory fact: the sounds started in the 1960s and ended in the 1980s whereas giant squids always have lived there and still live there, so the sounds would have continued. Thus, this theory is not plausible. Finally, in regard to the third theory of the reading which suggests that foreign submarines were emitting those sounds inadvertently, she opposes it by explaining that the sounds changed directions quickly and by that time no submarine could move so fast. Moreover, if other submarines were the source of the sounds, then engine noise must be heard as well but no engine noise accompanied the quackers.
The reading passage
This phrase/word (depending on the context) can be potentially replaced with :
describes
three
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theories
that
This phrase/word (depending on the context) can be potentially replaced with :
explain
the possible sources of the strange
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sounds
called '
Possible spelling mistake found.
quackers
' detected by Russian
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submarines
while patrolling the North Atlantic and the Arctic Ocean during 1960-1980. Each one of these
You use this word too often, consider replacing it with
theories
is rejected
by the lecturer as unlikely causes of the sounds.

The
first
You use this word too often, consider replacing it with
theory
presented by the reading states that those
You use this word too often, consider replacing it with
sounds
were made
by orca whales which the professor refutes by pointing out that orca whales
This phrase/word (depending on the context) can be potentially replaced with :
live
on the surface of the ocean while the
You use this word too often, consider replacing it with
submarines
This phrase/word (depending on the context) can be potentially replaced with :
move
around deep in the ocean,
therefore
, the crews could not have heard them.
Besides
, orca whales would have
been detected
by the sonar as solid moving objects, which was not the case.

The second
You use this word too often, consider replacing it with
theory
in the passage claims that giant squids could have emitted the
You use this word too often, consider replacing it with
sounds
.
This phrase/word is too simple and can be replaced with:
But
the lecturer argues that there is a contradictory fact: the
You use this word too often, consider replacing it with
sounds
This phrase/word (depending on the context) can be potentially replaced with :
started
in the 1960s and ended in the 1980s whereas giant squids always have
This phrase/word (depending on the context) can be potentially replaced with :
lived
there and
still
This phrase/word (depending on the context) can be potentially replaced with :
live
there,
This phrase/word is too simple and can be replaced with:
so
the
You use this word too often, consider replacing it with
sounds
would have continued.
Thus
, this
You use this word too often, consider replacing it with
theory
is not plausible.

Finally
, in regard to the third
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theory
of the reading which suggests that foreign
You use this word too often, consider replacing it with
submarines
were emitting those
You use this word too often, consider replacing it with
sounds
inadvertently
, she opposes it by explaining that the
You use this word too often, consider replacing it with
sounds
This phrase/word (depending on the context) can be potentially replaced with :
changed
directions
quickly
and by that time no
You use this word too often, consider replacing it with
submarine
could
This phrase/word (depending on the context) can be potentially replaced with :
move
This phrase/word is too simple and can be replaced with:
so
This phrase/word is too simple and can be replaced with:
fast
.
Moreover
, if other
You use this word too often, consider replacing it with
submarines
were the source of the
You use this word too often, consider replacing it with
sounds
, then engine noise
This phrase/word (depending on the context) can be potentially replaced with :
must
be heard
as well
This phrase/word is too simple and can be replaced with:
but
no engine noise accompanied the
Possible spelling mistake found.
quackers
.
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IELTS essay The reading passage describes three theories that explain the possible sources of the strange sounds called 'quackers' detected by Russian submarines while patrolling the North Atlantic and the Arctic Ocean during 1960-1980.

Essay
  American English
4 paragraphs
242 words
This writing has been penalized,
text can't be
less than 250 words in Task 2
and less than 150 words in Task 1
5.0
Overall Band Score
Coherence and Cohesion: 5.5
  • Structure your answers in logical paragraphs
  • ?
    One main idea per paragraph
  • Include an introduction and conclusion
  • Support main points with an explanation and then an example
  • Use cohesive linking words accurately and appropriately
  • Vary your linking phrases using synonyms
Lexical Resource: 5.0
  • Try to vary your vocabulary using accurate synonyms
  • Use less common question specific words that accurately convey meaning
  • Check your work for spelling and word formation mistakes
Grammatical Range: 6.5
  • Use a variety of complex and simple sentences
  • Check your writing for errors
Task Achievement: 5.5
  • Answer all parts of the question
  • ?
    Present relevant ideas
  • Fully explain these ideas
  • Support ideas with relevant, specific examples
Labels Descriptions
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    Currently is not available
  • Meet the criteria
  • Doesn't meet the criteria
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