高三北师大版英语一轮复习必修三Unit9Wheels题组快练作业9.doc

题组层级快练(九)
(第一次作业)
Ⅰ. 阅读理解
(2021届湖南省高三上百校联考)
A new study published this week in the journal Nature Communications has concluded that a 100 percent change to organic food production in England and Wales would actually lead to a great increase in greenhouse gas emissions. In turn, this would contribute to further climate change.
Although organic farming directly pours out fewer emissions than conventional farming—around 20 percent lower for crops and 4 percent for farm animals—it produces notably less food. As to this study’s findings, total organic agriculture in England and Wales would produce 40 percent less food. With less food in the market, the countries would need to increase food imports, which would produce more global greenhouse gas emissions.
Organic farming also increases the amount of absorbing carbon, a process where carbon dioxide(CO2) is “absorbed” out of the atmosphere and captured by plants and stored in the soil. However, even a total change to organic farming would only be equal to a tiny part of the higher emissions from overseas land use.
“We predict a drop in total food production of 40 percent under a fully organic farming process, compared to conventional farming, if we keep to the same national diet，” Dr Adrian Williams, lead author and reader in Agri－Environmental Systems at Cranfield University, said in a statement. “This results from lower crop quantity, because output is limited by a lower supply of nitrogen, which is mainly from other crops or solid waste from cattle on the grassland.
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Nevertheless, it is important to note that organic farming still holds some useful benefits for the environment, such as reducing exposure to chemicals and improving the varieties of creatures. In conclusion, the study suggests that organic farming will continue to play a key role in resolving the world’s environmental problems. However, it’s just one part of a much wider solution.
1. What will total organic agriculture bring to England?
A. Mo