The reading passage and lecture both discuss hydrogen as an alternative power source for the internal-combustion engine in cars. The reading passage states that the best replacement is using fuel-cell engine which needs hydrogen in order to produce electricity. However, the lecturer rejects the claim made in the reading, casting doubt all the three presented advantages in the passage.
First, the passage asserts that hydrogen used in fuel-cell would not be finished easily. According to the reading, this is because internal-combustion engine works using different kinds of petroleum fuel such as gasoline or diesel fuel which soon we would run out of it, while hydrogen is a renewable power resource so its obtaining sources are various and easily available. Nevertheless, the lecture puts forward the counterargument that hydrogen is not easily accessible and usable because fuel cell needs pure liquid hydrogen which is an artificial material and it is hard to produce and store it, for example liquid hydrogen should be restored in -270C degree which need a powerful cooling system, hence hydrogen is not a practical substance.
Next, the passage mentions that using hydrogen could solve the pollution problem. As declared by the passage, carbon dioxide gas, emitted through burning oil, is harmful for the environment while fuel-cell engine only produce water as its byproduct. The lecture, however, states that hydrogen and fuel-cell is not a solution for pollution problem because producing pure liquid hydrogen needs a large amount of energy that producing it need power to be generated like by burning coal that would pollute the environment.
The passage finally argues that fuel engine is more economic compared to internal-combustion engine. As stated by the passage, less money is needed using a fuel-cell based vehicle because it uses half the energy that internal combustion-engine would use at the same distance. Rejecting this final point made in the reading, the lecture argues that fuel- cell engine is much more expensive because it is made of platinum, a rare and expensive metal, which is needed for hydrogen chemical reactions to produce electricity and so far , platinum could not be replaced by any other metal.
Essay evaluations by e-grader
Grammar and spelling errors:
Line 2, column 319, Rule ID: IT_IS[7]
Message: Did you mean 'it's' (='it is') instead of 'its' (possessive pronoun)?
Suggestion: it's; it is
...drogen is a renewable power resource so its obtaining sources are various and easil...
^^^
Line 4, column 389, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...fuel- cell engine is much more expensive because it is made of platinum, a rare a...
^^
Line 4, column 466, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...are and expensive metal, which is needed for hydrogen chemical reactions to produ...
^^
Line 4, column 533, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma, but not before the comma
Suggestion: ,
...ctions to produce electricity and so far , platinum could not be replaced by any o...
^^
Transition Words or Phrases used:
finally, first, hence, however, if, nevertheless, so, while, for example, such as
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 19.0 10.4613686534 182% => OK
Auxiliary verbs: 9.0 5.04856512141 178% => OK
Conjunction : 9.0 7.30242825607 123% => OK
Relative clauses : 15.0 12.0772626932 124% => OK
Pronoun: 21.0 22.412803532 94% => OK
Preposition: 24.0 30.3222958057 79% => OK
Nominalization: 13.0 5.01324503311 259% => Less nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1891.0 1373.03311258 138% => OK
No of words: 354.0 270.72406181 131% => OK
Chars per words: 5.3418079096 5.08290768461 105% => OK
Fourth root words length: 4.33761313653 4.04702891845 107% => OK
Word Length SD: 2.9278380535 2.5805825403 113% => OK
Unique words: 180.0 145.348785872 124% => OK
Unique words percentage: 0.508474576271 0.540411800872 94% => More unique words wanted or less content wanted.
syllable_count: 605.7 419.366225166 144% => OK
avg_syllables_per_word: 1.7 1.55342163355 109% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 1.0 3.25607064018 31% => OK
Article: 10.0 8.23620309051 121% => OK
Subordination: 3.0 1.25165562914 240% => Less adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 12.0 13.0662251656 92% => OK
Sentence length: 29.0 21.2450331126 137% => The Avg. Sentence Length is relatively long.
Sentence length SD: 93.277661968 49.2860985944 189% => OK
Chars per sentence: 157.583333333 110.228320801 143% => OK
Words per sentence: 29.5 21.698381199 136% => OK
Discourse Markers: 6.75 7.06452816374 96% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 4.0 4.19205298013 95% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 6.0 4.45695364238 135% => OK
Sentences with neutral sentiment: 2.0 4.27373068433 47% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.279404266213 0.272083759551 103% => OK
Sentence topic coherence: 0.123355401088 0.0996497079465 124% => OK
Sentence topic coherence SD: 0.0721001574799 0.0662205650399 109% => OK
Paragraph topic coherence: 0.197125737955 0.162205337803 122% => OK
Paragraph topic coherence SD: 0.033488908346 0.0443174109184 76% => OK
Essay readability:
automated_readability_index: 18.5 13.3589403974 138% => OK
flesch_reading_ease: 33.58 53.8541721854 62% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 15.8 11.0289183223 143% => OK
coleman_liau_index: 14.28 12.2367328918 117% => OK
dale_chall_readability_score: 9.04 8.42419426049 107% => OK
difficult_words: 89.0 63.6247240618 140% => OK
linsear_write_formula: 11.0 10.7273730684 103% => OK
gunning_fog: 13.6 10.498013245 130% => OK
text_standard: 14.0 11.2008830022 125% => OK
What are above readability scores?
---------------------
Write the essay in 20 minutes.
Rates: 80.0 out of 100
Scores by essay e-grader: 24.0 Out of 30
---------------------
Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.
Grammar and spelling errors:
Line 2, column 319, Rule ID: IT_IS[7]
Message: Did you mean 'it's' (='it is') instead of 'its' (possessive pronoun)?
Suggestion: it's; it is
...drogen is a renewable power resource so its obtaining sources are various and easil...
^^^
Line 4, column 389, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...fuel- cell engine is much more expensive because it is made of platinum, a rare a...
^^
Line 4, column 466, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...are and expensive metal, which is needed for hydrogen chemical reactions to produ...
^^
Line 4, column 533, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma, but not before the comma
Suggestion: ,
...ctions to produce electricity and so far , platinum could not be replaced by any o...
^^
Transition Words or Phrases used:
finally, first, hence, however, if, nevertheless, so, while, for example, such as
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 19.0 10.4613686534 182% => OK
Auxiliary verbs: 9.0 5.04856512141 178% => OK
Conjunction : 9.0 7.30242825607 123% => OK
Relative clauses : 15.0 12.0772626932 124% => OK
Pronoun: 21.0 22.412803532 94% => OK
Preposition: 24.0 30.3222958057 79% => OK
Nominalization: 13.0 5.01324503311 259% => Less nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1891.0 1373.03311258 138% => OK
No of words: 354.0 270.72406181 131% => OK
Chars per words: 5.3418079096 5.08290768461 105% => OK
Fourth root words length: 4.33761313653 4.04702891845 107% => OK
Word Length SD: 2.9278380535 2.5805825403 113% => OK
Unique words: 180.0 145.348785872 124% => OK
Unique words percentage: 0.508474576271 0.540411800872 94% => More unique words wanted or less content wanted.
syllable_count: 605.7 419.366225166 144% => OK
avg_syllables_per_word: 1.7 1.55342163355 109% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 1.0 3.25607064018 31% => OK
Article: 10.0 8.23620309051 121% => OK
Subordination: 3.0 1.25165562914 240% => Less adverbial clause wanted.
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 12.0 13.0662251656 92% => OK
Sentence length: 29.0 21.2450331126 137% => The Avg. Sentence Length is relatively long.
Sentence length SD: 93.277661968 49.2860985944 189% => OK
Chars per sentence: 157.583333333 110.228320801 143% => OK
Words per sentence: 29.5 21.698381199 136% => OK
Discourse Markers: 6.75 7.06452816374 96% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 4.0 4.19205298013 95% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 6.0 4.45695364238 135% => OK
Sentences with neutral sentiment: 2.0 4.27373068433 47% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.279404266213 0.272083759551 103% => OK
Sentence topic coherence: 0.123355401088 0.0996497079465 124% => OK
Sentence topic coherence SD: 0.0721001574799 0.0662205650399 109% => OK
Paragraph topic coherence: 0.197125737955 0.162205337803 122% => OK
Paragraph topic coherence SD: 0.033488908346 0.0443174109184 76% => OK
Essay readability:
automated_readability_index: 18.5 13.3589403974 138% => OK
flesch_reading_ease: 33.58 53.8541721854 62% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 15.8 11.0289183223 143% => OK
coleman_liau_index: 14.28 12.2367328918 117% => OK
dale_chall_readability_score: 9.04 8.42419426049 107% => OK
difficult_words: 89.0 63.6247240618 140% => OK
linsear_write_formula: 11.0 10.7273730684 103% => OK
gunning_fog: 13.6 10.498013245 130% => OK
text_standard: 14.0 11.2008830022 125% => OK
What are above readability scores?
---------------------
Write the essay in 20 minutes.
Rates: 80.0 out of 100
Scores by essay e-grader: 24.0 Out of 30
---------------------
Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.