The passage puts forward three advantages of hydrogen-based engine to demonstrate that hydrogen-based engine will replace the internal-combustion engine. However, the lecturer says that hydrogen is not the solution to the problems mentioned in the passage.
First, hydrogen does rely on many renewable resources, but it isn' t easily available. Because it' s a practical pure liquid that is difficult to get and store. It needs to be stored at -253 ¡æ and requires elaborate cooling technology.
Second, hydrogen-based engine can' t solve the pollution problems mentioned in the passage, since pure hydrogen needs a purification process that needs energy produced by burning coal and oil.
Third, the passage says hydrogen-based engine cost less money and it is 2 times more efficient than the internal-combustion engine. But the lecturer says that it is expensive to manufacture a hydrogen-based engine because it needs platinum, which is rare and expensive and it can' t be replaced now.
- Car manufacturers and governments have been eagerly seeking a replacement for the automobile s main source of power the internal combustion engine By far the most promising alternative source of energy for cars is the hydrogen based fuel cell engine which 68
- Car manufacturers and governments have been eagerly seeking a replacement for the automobile s main source of power the internal combustion engine By far the most promising alternative source of energy for cars is the hydrogen based fuel cell engine which 66
- In an effort to encourage ecologically sustainable forestry practices an international organization started issuing certifications to wood companies that meet high ecological standards by conserving resources and recycling materials Companies that receive 55
Transition Words or Phrases used:
but, first, however, if, second, so, third
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 7.0 10.4613686534 67% => OK
Auxiliary verbs: 3.0 5.04856512141 59% => OK
Conjunction : 8.0 7.30242825607 110% => OK
Relative clauses : 6.0 12.0772626932 50% => More relative clauses wanted.
Pronoun: 12.0 22.412803532 54% => OK
Preposition: 12.0 30.3222958057 40% => More preposition wanted.
Nominalization: 5.0 5.01324503311 100% => OK
Performance on vocabulary words:
No of characters: 846.0 1373.03311258 62% => OK
No of words: 155.0 270.72406181 57% => More content wanted.
Chars per words: 5.45806451613 5.08290768461 107% => OK
Fourth root words length: 3.52844152537 4.04702891845 87% => OK
Word Length SD: 3.45055757156 2.5805825403 134% => OK
Unique words: 90.0 145.348785872 62% => More unique words wanted.
Unique words percentage: 0.58064516129 0.540411800872 107% => OK
syllable_count: 269.1 419.366225166 64% => 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: 3.0 8.23620309051 36% => 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: 8.0 13.0662251656 61% => 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: 19.0 21.2450331126 89% => OK
Sentence length SD: 41.8820889522 49.2860985944 85% => OK
Chars per sentence: 105.75 110.228320801 96% => OK
Words per sentence: 19.375 21.698381199 89% => OK
Discourse Markers: 5.25 7.06452816374 74% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 0.0 4.19205298013 0% => OK
Sentences with positive sentiment : 4.0 4.33554083885 92% => OK
Sentences with negative sentiment : 2.0 4.45695364238 45% => More negative sentences wanted.
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: 0.209562800453 0.272083759551 77% => OK
Sentence topic coherence: 0.0879419275918 0.0996497079465 88% => OK
Sentence topic coherence SD: 0.0823326254853 0.0662205650399 124% => OK
Paragraph topic coherence: 0.132464814157 0.162205337803 82% => OK
Paragraph topic coherence SD: 0.0776363684357 0.0443174109184 175% => OK
Essay readability:
automated_readability_index: 14.0 13.3589403974 105% => 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: 14.39 12.2367328918 118% => OK
dale_chall_readability_score: 8.86 8.42419426049 105% => OK
difficult_words: 42.0 63.6247240618 66% => More difficult words wanted.
linsear_write_formula: 9.0 10.7273730684 84% => OK
gunning_fog: 9.6 10.498013245 91% => OK
text_standard: 9.0 11.2008830022 80% => OK
What are above readability scores?
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More content wanted.
Rates: 66.6666666667 out of 100
Scores by essay e-grader: 20.0 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.