질문

문제 이해
H24 □□□□
다음 글의 밑줄 친 부분 중, 어법상 틀린 것은? [3점]
Not only are humans ① unique in the sense that they
began to use an ever-widening tool set, we are also
the only species on this planet that has constructed
forms of complexity that use external energy sources.
This was a fundamental new development, ② which
there were no precedents in big history. This capacity
may first have emerged between 1.5 and 0.5 million
years ago, when humans began to control fire. From
at least 50,000 years ago, some of the energy stored
in air and water flows ③ was used for navigation
and, much later, also for powering the first machines.
Around 10,000 years ago, humans learned to cultivate
plants and ④ tame animals and thus control these
important matter and energy flows. Very soon, they
also learned to use animal muscle power. About 250
years ago, fossil fuels began to be used on a large
scale. □□□□□ of many different kinds,
□□□□□ familiar with today.
풀이
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유사 문제와 풀이
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