The reading passage suggests that there are an array of problems to solve if scientists want to send humans to Mars. And in the lecture, the professor explains the problems and provides solutions for the specific problems.
Firstly, regarding the concern that the space vehicles isn't large enough to carry the food, water and oxygen for the astronauts for at leas two years, the professor points out that there is a solution called hydrophilic. Instead of carrying all of the food with themselves, the astronauts can cultivate the plants in the water, which requires little space compared with soil. Furthermore, these plants will not only provide the food the astronauts need, but also recycle the wasted water and release oxygen. With these plants growing in the space vehicles, the astronauts don't need to worry about the food, water and oxygen any more.
Secondly, the professor also provides the evidence that the astronauts can live in a zero-gravity environment for a long time. To avoid the negative effects such as decreased muscle mass or the lower bone density, the astronauts can do more regular exercises, which proved successful by the astronauts who lived in the space for several months.
Finally, for the problem that the solar radiation might be dangerous for the astronauts without the protection of the earth's magnetic field, the professor mentions that this kind of radiation is not in fatal level all the time -- only when the sun is particular active will the radiation reach the fatal level. What's more, there is also an option to protect the astronauts when the solar radiation is too large. Although constructing a shield for the whole spaceship doesn't make sense since it would add too much weight, the scientists can build up a smaller shielded area and a monitor instrument for the astronauts. When they find the radiation meet up the dangerous level via the monitor, they can hide in the shielded space.
Grammar and spelling errors:
Line 1, column 48, Rule ID: THERE_RE_MANY[3]
Message: Possible agreement error. Did you mean 'arrays'?
Suggestion: arrays
...ding passage suggests that there are an array of problems to solve if scientists want...
^^^^^
Line 3, column 56, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: isn't
...ing the concern that the space vehicles isnt large enough to carry the food, water a...
^^^^
Line 3, column 242, Rule ID: ALL_OF_THE[1]
Message: Simply use 'all the'.
Suggestion: all the
...called hydrophilic. Instead of carrying all of the food with themselves, the astronauts ca...
^^^^^^^^^^
Line 3, column 573, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: don't
...g in the space vehicles, the astronauts dont need to worry about the food, water and...
^^^^
Line 7, column 312, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: What's
...ll the radiation reach the fatal level. Whats more, there is also an option to protec...
^^^^^
Line 7, column 468, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: doesn't
...ucting a shield for the whole spaceship doesnt make sense since it would add too much ...
^^^^^^
Transition Words or Phrases used:
also, but, finally, first, firstly, furthermore, if, regarding, second, secondly, so, kind of, such as
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 7.0 10.4613686534 67% => OK
Auxiliary verbs: 11.0 5.04856512141 218% => Less auxiliary verb wanted.
Conjunction : 8.0 7.30242825607 110% => OK
Relative clauses : 12.0 12.0772626932 99% => OK
Pronoun: 13.0 22.412803532 58% => OK
Preposition: 31.0 30.3222958057 102% => OK
Nominalization: 10.0 5.01324503311 199% => OK
Performance on vocabulary words:
No of characters: 1620.0 1373.03311258 118% => OK
No of words: 322.0 270.72406181 119% => OK
Chars per words: 5.03105590062 5.08290768461 99% => OK
Fourth root words length: 4.23607819155 4.04702891845 105% => OK
Word Length SD: 2.56485432342 2.5805825403 99% => OK
Unique words: 179.0 145.348785872 123% => OK
Unique words percentage: 0.555900621118 0.540411800872 103% => OK
syllable_count: 486.0 419.366225166 116% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 3.25607064018 61% => OK
Article: 9.0 8.23620309051 109% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 2.0 1.51434878587 132% => OK
Preposition: 4.0 2.5761589404 155% => OK
Performance on sentences:
How many sentences: 12.0 13.0662251656 92% => OK
Sentence length: 26.0 21.2450331126 122% => The Avg. Sentence Length is relatively long.
Sentence length SD: 61.7069125427 49.2860985944 125% => OK
Chars per sentence: 135.0 110.228320801 122% => OK
Words per sentence: 26.8333333333 21.698381199 124% => OK
Discourse Markers: 8.5 7.06452816374 120% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 6.0 4.19205298013 143% => 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: 3.0 4.27373068433 70% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.0278505797066 0.272083759551 10% => The similarity between the topic and the content is low.
Sentence topic coherence: 0.0116856507772 0.0996497079465 12% => Sentence topic similarity is low.
Sentence topic coherence SD: 0.0165101442968 0.0662205650399 25% => Sentences are similar to each other.
Paragraph topic coherence: 0.0215629449402 0.162205337803 13% => Maybe some paragraphs are off the topic.
Paragraph topic coherence SD: 0.0139264790914 0.0443174109184 31% => Paragraphs are similar to each other. Some content may get duplicated or it is not exactly right on the topic.
Essay readability:
automated_readability_index: 15.7 13.3589403974 118% => OK
flesch_reading_ease: 53.55 53.8541721854 99% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 12.3 11.0289183223 112% => OK
coleman_liau_index: 12.19 12.2367328918 100% => OK
dale_chall_readability_score: 8.6 8.42419426049 102% => OK
difficult_words: 75.0 63.6247240618 118% => OK
linsear_write_formula: 13.0 10.7273730684 121% => OK
gunning_fog: 12.4 10.498013245 118% => OK
text_standard: 13.0 11.2008830022 116% => OK
What are above readability scores?
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Write the essay in 20 minutes.
It is not exactly right on the topic in the view of e-grader. Maybe there is a wrong essay topic.
Rates: 3.33333333333 out of 100
Scores by essay e-grader: 1.0 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.