TPO 30 Burning mirrors
in the lecture, the professor asserts that the claims made in the reading about the burning mirror being impractical and ineffective weapons are unconvincing. This casts doubt on the reading which states, however, there are several reasons to suspect that the story of the burning mirror is just a myth and the Greeks of Syracuse never really built such a device.
First and foremost, the speaker posits that Greeks did not need a large single sheet of copper to form a big burning mirror. In fact, the experiment has shown that single flat pieces of polished copper can form a parabolic shape. Furthermore, because mathematicians knew the properties of parabola, they could direct the assembly to construct a parabolic figure. This contradicts the text, which proclaims the technology for manufacturing a large sheet of copper with such specifications did not exist in the ancient world.
Moreover, the lecturer argues that the burning mirror would not have taken 10 minutes, which was too long to put the wooden ships on fire. Actually, these ships were not made entirely of wood but also from other materials called pitches that could work quickly enough to start the fire. For example, Romanians used these sticky substances to seal pieces of wood together and also to make waterproof ships. Therefore, they could have needed a few seconds to set the ship into fire even if the ship was moving. This opposes the reading, which declares that it is unlikely that Roman ships stayed perfectly still for that much time, so such a weapon would have been very impractical and ineffective.
Finally, the professor explains that despite they had the flaming arrows, Greeks had to build a burning mirror as a device to defeat themselves. In fact, because the Romanian' soldiers were familiar with the arrows, and they would have been watching for them and taking caution. For example, they could see just the mirror with no burning rise in the mirror then suddenly, surprisingly fire arise in a ship. Consequently, this tool has been more surprising and effective that flaming arrows.
- Technology has made children less creative than before 81
- Robert E. Peary was a well-known adventurer and arctic explorer who in 1909 set out to reach the North Pole. When he returned from the expedition, he claimed to have reached the pole on April 7, 1909. This report made him into an international celebrity. 73
- Do you agree or disagree with the following statement? The rules that societies today expect young people to follow and obey are too strict. Use specific reasons and examples to support your answer. 76
- TPO 30 Burning mirrors 80
- reading passage.题目原文：Hail—pieces of ice that form and fall from clouds instead of snow or rain—has always been a problem for farmers in some areas of the United States. Hail pellets can fall with great force and destroy crops in the field. O 75
Grammar and spelling errors:
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Message: Possible typo: you repeated a whitespace
Suggestion:
in the lecture, the professor asserts th...
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Line 1, column 4, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: In
in the lecture, the professor asserts that...
^^
Line 3, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...e never really built such a device. First and foremost, the speaker posits t...
^^^^^
Line 5, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
... did not exist in the ancient world. Moreover, the lecturer argues that the b...
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Line 7, column 1, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...en very impractical and ineffective. Finally, the professor explains that des...
^^^^^
Transition Words or Phrases used:
actually, also, but, consequently, finally, first, furthermore, however, if, moreover, really, second, so, still, then, therefore, as to, for example, in fact
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 12.0 10.4613686534 115% => 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: 25.0 22.412803532 112% => OK
Preposition: 35.0 30.3222958057 115% => OK
Nominalization: 2.0 5.01324503311 40% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1742.0 1373.03311258 127% => OK
No of words: 346.0 270.72406181 128% => OK
Chars per words: 5.03468208092 5.08290768461 99% => OK
Fourth root words length: 4.31289638616 4.04702891845 107% => OK
Word Length SD: 2.56589458648 2.5805825403 99% => OK
Unique words: 191.0 145.348785872 131% => OK
Unique words percentage: 0.552023121387 0.540411800872 102% => OK
syllable_count: 522.9 419.366225166 125% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 8.0 3.25607064018 246% => Less pronouns wanted as sentence beginning.
Article: 5.0 8.23620309051 61% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 3.0 2.5761589404 116% => OK
Performance on sentences:
How many sentences: 15.0 13.0662251656 115% => OK
Sentence length: 23.0 21.2450331126 108% => OK
Sentence length SD: 30.5478859061 49.2860985944 62% => OK
Chars per sentence: 116.133333333 110.228320801 105% => OK
Words per sentence: 23.0666666667 21.698381199 106% => OK
Discourse Markers: 10.5333333333 7.06452816374 149% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 5.0 4.19205298013 119% => OK
Sentences with positive sentiment : 2.0 4.33554083885 46% => More positive sentences wanted.
Sentences with negative sentiment : 8.0 4.45695364238 179% => OK
Sentences with neutral sentiment: 5.0 4.27373068433 117% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.506507858745 0.272083759551 186% => OK
Sentence topic coherence: 0.152044856611 0.0996497079465 153% => OK
Sentence topic coherence SD: 0.0901856394995 0.0662205650399 136% => OK
Paragraph topic coherence: 0.278951286294 0.162205337803 172% => OK
Paragraph topic coherence SD: 0.0617994321932 0.0443174109184 139% => OK
Essay readability:
automated_readability_index: 13.8 13.3589403974 103% => OK
flesch_reading_ease: 56.59 53.8541721854 105% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 11.1 11.0289183223 101% => OK
coleman_liau_index: 12.19 12.2367328918 100% => OK
dale_chall_readability_score: 8.25 8.42419426049 98% => OK
difficult_words: 76.0 63.6247240618 119% => OK
linsear_write_formula: 14.0 10.7273730684 131% => OK
gunning_fog: 11.2 10.498013245 107% => OK
text_standard: 14.0 11.2008830022 125% => OK
What are above readability scores?
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Write the essay in 20 minutes.
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.