英語(yǔ)必修5外研版module4方案一精品教案6(存儲(chǔ)版)
【正文】 【鞏固作業(yè)設(shè)計(jì)】 閱讀下列四篇短文，從每小題后所給的 A,B,C 或 D 四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。 Rivers may be a significant source of the greenhouse gas nitrous oxide (一氧化二氮 ), scientists now find. Their calculation suggests that across the globe the waterways contribute three times the amount of nitrous oxide to the atmosphere as had been estimated by the International Panel on Climate Change (IPCC), the United Nations scientific body charged with reviewing climate change research. They found that the amount of nitrous oxide produced in streams is related to human activities that release nitrogen (氮 ) into the environment, such as fertilizer use and sewage discharges. “Human activities, including fossil fuel bustion and intensive agriculture, have increased the availability of nitrogen in the environment,” said Jake Beaul
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