지난달 미국 고등학교 10대 미식축구선수 6명이 사망하면서 미국 교내 미식 축구의 위험성에 대한 논란이 계속되고 있는데요. 미식축구는 몸싸움이 잦은 스포츠이니만큼 뇌진탕 및 기타 부상 위험이 많다고 알려져 있습니다. 잇따른 사망으로 10대들의 미식 축구의 안정성에 대한 우려의 목소리는 점점 높아지고 있습니다. 

Vehicles release a lot of greenhouse gases that significantly contribute to climate change. For this reason, more national governments and car manufacturers are embracing electric vehicles because of the perceived benefits that they have for the environment. Electric vehicles run on rechargeable batteries that come from mined raw materials such as lithium, cobalt, and nickel. Electric vehicles are considered better than hybrid and conventional vehicles. Many people believe that transitioning to electric vehicles should be a major strategy in fighting climate change. However, this belief is still highly debated even by experts. Supporters of electric vehicles say that thanks to not having an exhaust system, electric vehicles leave zero carbon footprints. This allows electric vehicles to help prevent climate change and reduce air pollution. Also, the production side of electric car batteries may still release significant amounts of carbon footprint. However, it is still clear that electric vehicles are the way to go because as far as the goal of reducing carbon emissions, they still do a better job overall. Finally, many large companies are now turning to the use of renewable energy sources and trying to lessen the environmental impacts of mining raw materials as they produce supplies for electric vehicle batteries. This makes electric cars more environment-friendly in all aspects starting from their production to their actual use on the road. Opponents of electric vehicles say that electric cars are not exactly environment-friendly. As the world transitions to electric vehicles, mining sectors get pressured to meet the demand for raw materials, pushing them to work harder. This leads to scarcer raw materials and an increase in the environmental impacts of mining such as erosion, formation of sinkholes, loss of biodiversity, and contamination of soil, groundwater, and surface water by chemicals used in the mining process. Moreover, electric cars may have lesser carbon emissions, but the process of producing them generates more carbon emissions than the production of conventional vehicles does. Also, the power sources that supply the energy of electric vehicle batteries are usually not carbon emission-free. This means that electric vehicles are only as eco-friendly as the source of their power supply. Finally, the method of disposal of electric vehicle batteries is also a major problem that needs to be carefully considered. Transitioning to electric vehicles means more batteries to be disposed which means more toxic chemicals are released, posing damage to humans and the environment.

1. 밑줄 친 부분 중 어법상 옳지 않은 것은?

Passenger pigeons ① have flown the skies of North America just one hundred years ago, and made up one-fourth of all the birds on that continent. But do you know why this species went from being abundant to becoming extinct? They settled ② in forested habitats that were being chopped down at a rapid pace, and ③ were considered ④ one of the tastiest birds.

2. 밑줄 친 부분 중 어법상 옳지 않은 것은? 

① On his first day on the job, Jasper was nervous. Everyone looked so busy, and he felt like he was the only one who didn´t know what he was doing. ② Working at his desk, he noticed that the place was quiet, and when people conversed, it was in hushed tones. Thus, upon ③ entering to his cubicle, he made sure to do things quietly to avoid disturbing the workers ④ who were near his own workstation.