Which of the following most accurately summarizes the opinion of the author in the text?
Result:
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Option 4: "Thanks to the Bessemer method, more steel can be refined than before."
Explanation: This option is correct as it accurately reflects the author's opinion. The text mentions the development of methods for refining steel, including the Bessemer method, which implies that these advancements allow for greater quantities of steel to be refined than previously possible.
Option 1: "Thanks to the blast furnace, large quantities of iron were made unavailable."
Explanation: This option is incorrect because it contradicts the text. The blast furnace actually made large quantities of iron accessible, not unavailable. The phrase 'made unavailable' is the opposite of what the text states.
Option 2: "The production of iron and steel is a science."
Explanation: While the text discusses advancements in iron and steel production, it does not explicitly refer to it as a 'science.' This option is too vague and does not capture the author's specific focus on the methods and advancements in production.
Option 3: "In the past, it used to be cheap to produce steel."
Explanation: This option is incorrect because the text does not mention the cost of producing steel in the past. It only states that steel can be produced at a small expense currently, which does not imply that it was cheap in the past.
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