The pollution source and pollution state of surface water is respectively assessed with equal-standard-pollution-load index and Nemero index, and the habitans' health is assessed as well by comparison with pre-dev...The pollution source and pollution state of surface water is respectively assessed with equal-standard-pollution-load index and Nemero index, and the habitans' health is assessed as well by comparison with pre-development of geo-thermal field. Results show that: 1) Three pollutive factors obviously fail to attain the required standards and their order sorted by impact degree is As>F- >S2-. 2) The Nemero index of Donggua cross section of Duilongqu River is 0. 725 and the water quality is at mildly-polluted level. 3) In Lhasa River, the Nemero indexes of cross sections affected by geo-thermal fields are much higher than that of the unaffected one, which shows the present and potential impacts of geo-thermal development. 4) Much more inhabitants nearby got trichomadesis sickness after geothermal development, which shows that the surface water pollution in this area has threatened the inhabitants' health. In addition, other environmental issues caused by Yangbajing geothermal development are analyzed and some countermeasures are proposed.展开更多
The teaching of reading and writing is an important part in Chinese learning.It is a key point to improve students Chinese core quality.Under the background of new curriculum reform,it pays special attention to the cu...The teaching of reading and writing is an important part in Chinese learning.It is a key point to improve students Chinese core quality.Under the background of new curriculum reform,it pays special attention to the cultivation of primary students Chinese learning habits and comprehensive ability.It analyzes the logical structure and educational elements of primary Chinese discipline,and builds a bridge between reading and writing teaching.This paper analyzes the significance of effective combination of reading and writing in primary school Chinese teaching,and puts forward some suggestions to improve the combination of reading and reading and writing teaching based on the current situation of primary school Chinese teaching time.展开更多
基金Supported by the National Natural Science Foundation of China(50099620)
文摘The pollution source and pollution state of surface water is respectively assessed with equal-standard-pollution-load index and Nemero index, and the habitans' health is assessed as well by comparison with pre-development of geo-thermal field. Results show that: 1) Three pollutive factors obviously fail to attain the required standards and their order sorted by impact degree is As>F- >S2-. 2) The Nemero index of Donggua cross section of Duilongqu River is 0. 725 and the water quality is at mildly-polluted level. 3) In Lhasa River, the Nemero indexes of cross sections affected by geo-thermal fields are much higher than that of the unaffected one, which shows the present and potential impacts of geo-thermal development. 4) Much more inhabitants nearby got trichomadesis sickness after geothermal development, which shows that the surface water pollution in this area has threatened the inhabitants' health. In addition, other environmental issues caused by Yangbajing geothermal development are analyzed and some countermeasures are proposed.
文摘The teaching of reading and writing is an important part in Chinese learning.It is a key point to improve students Chinese core quality.Under the background of new curriculum reform,it pays special attention to the cultivation of primary students Chinese learning habits and comprehensive ability.It analyzes the logical structure and educational elements of primary Chinese discipline,and builds a bridge between reading and writing teaching.This paper analyzes the significance of effective combination of reading and writing in primary school Chinese teaching,and puts forward some suggestions to improve the combination of reading and reading and writing teaching based on the current situation of primary school Chinese teaching time.
