The passage suggests hydrogen as an alternative energy source for automobiles in the future. However, the lecturer believes it is too optimistic, based on three reasons.
First of all, it is not easy to get pure liquid hydrogen from water for automobiles currently. The difficulties in producing and storage of liquid hydrogen make it impractical to use it in fuel-cells to power cars. This contradicts with the argument in the passage that hydrogen is easily available from a variety of sources.
Secondly, the professor contradicts the idea from the reading material that utilizing hydrogen can solve pollution problems. Although hydrogen cars do not emit pollutions, factories still generate great pollution when producing hydrogen, for most factories rely on burning of coals or oil as an energy source.
Thirdly, the passage claims that using hydrogen would be much cheaper. However, the lecturer disagrees with that by citing that platinum, a very expensive metal, is required for hydrogen fuel-cell, making it expensive, and displacing it with cheaper metals has been unsuccessful.
All in all, the inavailability of pure liquid hydrogen, the unavoidable pollution and the high price of hydrogen fuel-cell prevent its massive utiilization claimed in the reading passage.
Transition Words or Phrases used:
first, however, if, second, secondly, so, still, third, thirdly, first of all
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 6.0 10.4613686534 57% => More to be verbs wanted.
Auxiliary verbs: 2.0 5.04856512141 40% => OK
Conjunction : 4.0 7.30242825607 55% => More conjunction wanted.
Relative clauses : 6.0 12.0772626932 50% => OK
Pronoun: 13.0 22.412803532 58% => OK
Preposition: 24.0 30.3222958057 79% => OK
Nominalization: 5.0 5.01324503311 100% => OK
Performance on vocabulary words:
No of characters: 1093.0 1373.03311258 80% => OK
No of words: 197.0 270.72406181 73% => More content wanted.
Chars per words: 5.54822335025 5.08290768461 109% => OK
Fourth root words length: 3.74642080493 4.04702891845 93% => OK
Word Length SD: 2.96599640682 2.5805825403 115% => OK
Unique words: 120.0 145.348785872 83% => OK
Unique words percentage: 0.609137055838 0.540411800872 113% => OK
syllable_count: 342.9 419.366225166 82% => OK
avg_syllables_per_word: 1.7 1.55342163355 109% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Interrogative: 0.0 0.116997792494 0% => OK
Article: 9.0 8.23620309051 109% => OK
Subordination: 1.0 1.25165562914 80% => OK
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 0.0 2.5761589404 0% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 10.0 13.0662251656 77% => OK
Sentence length: 19.0 21.2450331126 89% => OK
Sentence length SD: 46.8320403143 49.2860985944 95% => OK
Chars per sentence: 109.3 110.228320801 99% => OK
Words per sentence: 19.7 21.698381199 91% => OK
Discourse Markers: 7.7 7.06452816374 109% => OK
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 0.0 4.19205298013 0% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 5.0 4.45695364238 112% => OK
Sentences with neutral sentiment: 1.0 4.27373068433 23% => More facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.299533810633 0.272083759551 110% => OK
Sentence topic coherence: 0.116948581027 0.0996497079465 117% => OK
Sentence topic coherence SD: 0.0645932707797 0.0662205650399 98% => OK
Paragraph topic coherence: 0.163603943049 0.162205337803 101% => OK
Paragraph topic coherence SD: 0.0379677075332 0.0443174109184 86% => OK
Essay readability:
automated_readability_index: 14.6 13.3589403974 109% => OK
flesch_reading_ease: 43.73 53.8541721854 81% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 11.9 11.0289183223 108% => OK
coleman_liau_index: 14.91 12.2367328918 122% => OK
dale_chall_readability_score: 9.63 8.42419426049 114% => OK
difficult_words: 63.0 63.6247240618 99% => OK
linsear_write_formula: 8.5 10.7273730684 79% => Linsear_write_formula is low.
gunning_fog: 9.6 10.498013245 91% => OK
text_standard: 15.0 11.2008830022 134% => OK
What are above readability scores?
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Rates: 73.3333333333 out of 100
Scores by essay e-grader: 22.0 Out of 30
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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.