2013-10-21
展开全部
题目:The food habit of the middle school students
正文:To be frank,the modern middle school students become more and more puzzling,so does their food habit.Almost all the students like to eat snack,and some of them regard it as their meals and don't have what they should have.Even worse,many students get used to not have breakfast which will do harm to their health.And current students never check the shelf life of the food which is very dangerous,and some students always get hurt by it.In addtion,most of the students like to eat the street food which is not healthful,and it's of no nutrition in many times.Therefore,we should start to rebuild our food habit to welcome a healthier future.
中学生的饮食习惯坦率地说,现代中学生也变得越来越莫名其妙,那么他们的饮食习惯的. 几乎所有的学生都喜欢吃零食,他们中的一些人把它看作是吃饭的时候,不要有什么他们应该…更糟的是,许多学生习惯于不吃早餐,会伤害他们的健康与现有的学生从没有检查的食物是很危险的,和一些学生总是受到伤害它另外,大多数的学生都喜欢吃的食物是不健康的街道,而且它的任何营养中多次因此,我们应该开始重建我们的饮食习惯欢迎一个更健康的未来。
正文:To be frank,the modern middle school students become more and more puzzling,so does their food habit.Almost all the students like to eat snack,and some of them regard it as their meals and don't have what they should have.Even worse,many students get used to not have breakfast which will do harm to their health.And current students never check the shelf life of the food which is very dangerous,and some students always get hurt by it.In addtion,most of the students like to eat the street food which is not healthful,and it's of no nutrition in many times.Therefore,we should start to rebuild our food habit to welcome a healthier future.
中学生的饮食习惯坦率地说,现代中学生也变得越来越莫名其妙,那么他们的饮食习惯的. 几乎所有的学生都喜欢吃零食,他们中的一些人把它看作是吃饭的时候,不要有什么他们应该…更糟的是,许多学生习惯于不吃早餐,会伤害他们的健康与现有的学生从没有检查的食物是很危险的,和一些学生总是受到伤害它另外,大多数的学生都喜欢吃的食物是不健康的街道,而且它的任何营养中多次因此,我们应该开始重建我们的饮食习惯欢迎一个更健康的未来。
2013-10-21
展开全部
Climate changemitigation policies tend to focus on the energy sector, while the livestock sector receives surprisingly little attention, despite the fact that it accounts for 18% of the greenhouse gas emissions and for 80% of total anthropogenic land use. From a dietary perspective, new insights in the adverse health effects of beef and pork have lead to a revision of meat consumption recommendations. Here,we explored the potential impact of dietary changes on achieving ambitious climate stabilization levels.By using an integrated assessment model, we found a global food transition to less meat, or even a complete switch to plant-based protein food to have
a dramatic effect on land use. Up to 2,700 Mha of pasture and 100 Mha of cropland could be abandoned, resulting in a large carbon uptake from regrowing vegetation.
Additionally, methane and nitrous oxide emission would be reduced substantially.
A global transition to a lowmeat-diet as recommended for health reasons would reduce the mitigation costs to achieve a 450 ppm CO2-eq. stabilisation target by about 50% in 2050 compared to the reference case. Dietary changes could therefore not only create substantial benefits for human health and global land use, but can also play an important role in future climate change mitigation policies.
减缓气候变化的政策往往把注意力集中在能源部门,尽管畜牧业占温室气体排放的18%,占人为土地使用总数的80%,却极为不予重视。从饮食的角度来看,牛肉和猪肉对健康有害的新见解已使肉类消费的推荐量得以修改。这里,我们探讨饮食改变对实现稳定气候变化这一艰巨计划的潜在影响。
通过使用综合评估模型,我们发现全球饮食转为少吃肉,甚至彻底改为植物性蛋白的食物对土地利用有巨大的影响。多达270亿公顷的牧场和10亿公顷的耕地会成为闲地,使植被重生以吸收大量的碳。此外,甲烷和一氧化二氮排放量将大幅减少。 如为健康之故全世界转向低肉饮食,与参照例子相比,将降低约50%的减排成本以实现2050年450ppm二氧化碳当量的温室气体稳定目标。因此饮食的改变,不仅可为人类健康和全球土地使用带来显著的好处,也能在未来减缓气候变化政策中发挥重要作用。
a dramatic effect on land use. Up to 2,700 Mha of pasture and 100 Mha of cropland could be abandoned, resulting in a large carbon uptake from regrowing vegetation.
Additionally, methane and nitrous oxide emission would be reduced substantially.
A global transition to a lowmeat-diet as recommended for health reasons would reduce the mitigation costs to achieve a 450 ppm CO2-eq. stabilisation target by about 50% in 2050 compared to the reference case. Dietary changes could therefore not only create substantial benefits for human health and global land use, but can also play an important role in future climate change mitigation policies.
减缓气候变化的政策往往把注意力集中在能源部门,尽管畜牧业占温室气体排放的18%,占人为土地使用总数的80%,却极为不予重视。从饮食的角度来看,牛肉和猪肉对健康有害的新见解已使肉类消费的推荐量得以修改。这里,我们探讨饮食改变对实现稳定气候变化这一艰巨计划的潜在影响。
通过使用综合评估模型,我们发现全球饮食转为少吃肉,甚至彻底改为植物性蛋白的食物对土地利用有巨大的影响。多达270亿公顷的牧场和10亿公顷的耕地会成为闲地,使植被重生以吸收大量的碳。此外,甲烷和一氧化二氮排放量将大幅减少。 如为健康之故全世界转向低肉饮食,与参照例子相比,将降低约50%的减排成本以实现2050年450ppm二氧化碳当量的温室气体稳定目标。因此饮食的改变,不仅可为人类健康和全球土地使用带来显著的好处,也能在未来减缓气候变化政策中发挥重要作用。
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