[유튜브] 210802 - 임용기출 16년 A11 올바른 독해법 & 막바지 공부방법

안녕하세요 오성호입니다. 2021년 8월 2일 유튜브 채널 업데이트 했습니다.

주제: #임용기출 16년A11 올바른 독해법 & 막바지 공부방법

시험 안 보셔도 문제 풀어보세요. 여러분 영어 실력 향상에 큰 도움이 될 겁니다.

1. Read the passage and follow the directions. 【4 points】 - 2016년 A형 11번

When it comes to climate, what counts is not only what humans do to reduce the buildup of greenhouse gases, but also how the earth responds. Currently half the carbon we release into the atmosphere gets absorbed by land and sea―much of it by plants, which take in carbon dioxide in the process of photosynthesis.

This cycle has the potential to change at any time. At issue is the balance between two natural phenomena. One is beneficial: as carbon-dioxide levels in the air rise, plants grow more quickly, absorbing more carbon in return. Scientists can measure this in the lab, but they don’t know how much more fertile the new, carbon-enhanced environment will be for plants. The other is that as temperatures rise, permafrost, which holds an enormous amount of carbon from long-dead plants, tends to dry out, allowing decay and a release of carbon into the atmosphere. If this phenomenon, called “outgassing,” were to kick in, it could inundate the atmosphere with carbon dioxide, perhaps doubling or tripling the effect of the past century of human industry.

Nobody knows for sure what might trigger outgassing, but preventing a global temperature increase of more than 2 degrees Celsius is considered essential. To stay below that limit, the consensus is that we should establish a maximum level of carbon in the atmosphere and do whatever is necessary to stay below it. A few years ago, scientists thought that a doubling of carbon concentrations over preindustrial times, to 550 parts per million, was a reasonable line in the sand; in recent years they’ve revised that figure downward, to 450 ppm. But reaching that would require a drastic 80 percent cut in emissions by midcentury.

Meanwhile, observations, though not conclusive, have been pointing in the wrong direction: temperatures are rising quickly at the poles, the north polar ice cap is in retreat, permafrost is showing troubling signs of change, and ocean currents may be weakening the uptake of carbon. As we feel good about driving hybrids and using fluorescent bulbs, our fate may be riding on an obscure contest between ______________ and permafrost.

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Fill in the blank with ONE word from the passage. Then explain what would happen to the permafrost if global temperature rises by more than 2 degrees Celsius.

https://www.youtube.com/watch?v=LlZlCdMtVhc

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