Which one of the sentences is more formal/ academic in style? Write 1 or 2 as your answer (just the number).1 The emission levels have been going up and down.2 The emission levels have fluctuated.

Question

BlackTom AI · Accepted Answer

The task asks us to identify which sentence is more formal or academic in style. 
Option 1 states: 'The emission levels have been going up and down.' This phrasing is more colloquial and uses everyday wording; the phrase 'going up and down' is common in spoken language and less precise for academic writing. 
Option 2 states: 'The emission levels have fluctuated.' This version uses more formal vocabulary ('fluctuated' instead of 'going up and down') and a concise, precise construction typical of scholarly prose. 
In academic writing, authors favor verbs that convey specific, established meaning and avoid colloquial patterns. The second sentence achieves that with fewer informalities and a more refined tone. 
Thus, comparing the two, the second sentence aligns more closely with formal/academic style, while the first is more conversational.

Which one of the sentences is more formal/ academic in style? Write 1 or 2 as your answer (just the number).1 The emission levels have been going up and down.2 The emission levels have fluctuated.简答题

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