Many teenagers spend hours online every day. But this excessive use can impair their social skills and mental health.

Question

BlackTom AI · Accepted Answer

Examining the question, we are choosing the best way to present the idea that teenagers’ extensive online use can affect social skills and mental health.
Option A: 'Many teenagers spend hours online every day. However, this excessive use can impair their social skills and mental health.' This option uses two independent clauses and connects them with 'However' appropriately to show contrast between the general statement and the consequence. The punctuation is correct (a period between the sentences), and the wording is clear and cohesive.
Option B: 'Although many teenagers spend hours online every day, but this excessive use can impair their social skills and mental health.' Here, the problem lies in combining 'although' and 'but' together. Using both concessive markers in one sentence creates a redundancy and a grammatical clash; the sentence should either use 'although' or 'but', not both, to introduce the contrast.
Option C: 'Both A and B are correct.' Since B is not correctly formed, this option is not accurate. Claiming that both are correct misrepresents the grammatical issue identified in B and would mislead about proper coordination of dependent and coordinating conjunctions.
In summary, Option A presents a grammatically sound and logically clear pair of statements, whereas Option B contains a redundancy that disrupts the sentence structure, and Option C incorrectly asserts that both are correct. The most appropriate choice is A, given standard English grammar and coherence in expressing a cause-and-effect relationship.

Many teenagers spend hours online every day. But this excessive use can impair their social skills and mental health.单项选择题

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