The passage talks about the advantage of hydrogen fuel cell and thinks that it will be beneficial in many ways if the traditional combustion engine can be replaced by the hydrogen fuel cell. But the lecture casts doubt on the passage.
First, the lecturer clearly illustrates that, although the reading passage mentions that the source of hydrogen is easy and available, actually it is not so plentiful. The professor strengthens the argument by saying that in hydrogen fuel cell, water can’t be used directly, it needs to convert to hydrogen, and the problem is here. Again it is crucial to keep the hydrogen in the liquid state at -2500C. It requires a very sophisticated technique.
Second, the lecture mentions that hydrogen fuel cell can’t reduce environmental pollution as the passage indicates in the article. She believes that the hydrogen obtained from the water needs to purify and that purification expenses lots of energy that ultimately create oil. Although hydrogen fuel cell can’t pollute the environment, the oil must create pollution.
In the last, the lecture also opposes the idea of passage that the hydrogen fuel cell is cost effective. She says that hydrogen fuel cell requires a rare and expensive metal like platinum when it operates, again without this pt this cell can’t do any work or simply can’t produce any electricity and finally the process would be failed.
Transition Words or Phrases used:
actually, also, but, finally, first, if, second, so, then
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 9.0 10.4613686534 86% => OK
Auxiliary verbs: 9.0 5.04856512141 178% => OK
Conjunction : 8.0 7.30242825607 110% => OK
Relative clauses : 11.0 12.0772626932 91% => OK
Pronoun: 20.0 22.412803532 89% => OK
Preposition: 21.0 30.3222958057 69% => OK
Nominalization: 6.0 5.01324503311 120% => OK
Performance on vocabulary words:
No of characters: 1197.0 1373.03311258 87% => OK
No of words: 229.0 270.72406181 85% => More content wanted.
Chars per words: 5.22707423581 5.08290768461 103% => OK
Fourth root words length: 3.89008302616 4.04702891845 96% => OK
Word Length SD: 2.74354687331 2.5805825403 106% => OK
Unique words: 128.0 145.348785872 88% => More unique words wanted.
Unique words percentage: 0.558951965066 0.540411800872 103% => OK
syllable_count: 372.6 419.366225166 89% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 4.0 3.25607064018 123% => OK
Article: 6.0 8.23620309051 73% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 1.0 2.5761589404 39% => More preposition wanted as sentence beginning.
Performance on sentences:
How many sentences: 11.0 13.0662251656 84% => Need more sentences. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. And also check the lengths of sentences, maybe they are too long.
Sentence length: 20.0 21.2450331126 94% => OK
Sentence length SD: 59.959490457 49.2860985944 122% => OK
Chars per sentence: 108.818181818 110.228320801 99% => OK
Words per sentence: 20.8181818182 21.698381199 96% => OK
Discourse Markers: 5.18181818182 7.06452816374 73% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 0.0 4.19205298013 0% => OK
Sentences with positive sentiment : 5.0 4.33554083885 115% => OK
Sentences with negative sentiment : 4.0 4.45695364238 90% => 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: 0.374530258007 0.272083759551 138% => OK
Sentence topic coherence: 0.14859714378 0.0996497079465 149% => OK
Sentence topic coherence SD: 0.127865941225 0.0662205650399 193% => OK
Paragraph topic coherence: 0.263271891136 0.162205337803 162% => OK
Paragraph topic coherence SD: 0.0855656640361 0.0443174109184 193% => OK
Essay readability:
automated_readability_index: 13.6 13.3589403974 102% => OK
flesch_reading_ease: 51.18 53.8541721854 95% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 11.1 11.0289183223 101% => OK
coleman_liau_index: 13.05 12.2367328918 107% => OK
dale_chall_readability_score: 8.56 8.42419426049 102% => OK
difficult_words: 57.0 63.6247240618 90% => OK
linsear_write_formula: 11.0 10.7273730684 103% => OK
gunning_fog: 10.0 10.498013245 95% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?
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Rates: 80.0 out of 100
Scores by essay e-grader: 24.0 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.