人教版高中英语必修四Unit2 Working the land Using Language Chemical or organic farming （1）课件（共44张PPT）
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| 名称 | 人教版高中英语必修四Unit2 Working the land Using Language Chemical or organic farming （1）课件（共44张PPT） |  | |
| 格式 | zip | ||
| 文件大小 | 2.0MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版（新课程标准） | ||
| 科目 | 英语 | ||
| 更新时间 | 2020-06-28 18:37:01 | ||
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(共44张PPT)
Unit2 CHEMICAL OR ORGANIC FARMING? 化学耕作还是有机耕作？ Over the past half century, using chemical fertilizers has become very common in farming. 在过去的半个世纪里，在耕作中使用化肥已经非常普遍。Many farmers welcomed them as a great way to stop crop disease and increase production. 很多农民喜欢使用化肥。把化肥作为防治农作物病虫害和提高产量的重要手段。 Recently, however, scientists have been finding that long-term use of these fertilizers can cause damage to the land and, even more dangerous, to people's health. 然而，最近科学家发现长期使用这些肥料会造成土地受损，甚至更危险的是，会对人们的健康造成危害。
Unit2 CHEMICAL OR ORGANIC FARMING? 化学耕作还是有机耕作？ Over the past half century, using chemical fertilizers has become very common in farming. 在过去的半个世纪里，在耕作中使用化肥已经非常普遍。Many farmers welcomed them as a great way to stop crop disease and increase production. 很多农民喜欢使用化肥。把化肥作为防治农作物病虫害和提高产量的重要手段。 Recently, however, scientists have been finding that long-term use of these fertilizers can cause damage to the land and, even more dangerous, to people's health. 然而，最近科学家发现长期使用这些肥料会造成土地受损，甚至更危险的是，会对人们的健康造成危害。
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