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The aim of this study was to create ecological college English teaching strategies in non-English speaking countries in view of the increasing importance and popularity of English. The study shows most college students hope they are able to learn English well and they will be very happy if college English teachers can adopt some efficient and suitable teaching strategies. In this paper, the author puts forward college English teaching is a kind of micro-ecosystem in the light of ecology which has got such ecological characteristics as adaptability, openness and sustainability. In order to create suitable ecological college English teaching environments, the college English teaching are supposed to insist on 5C principles, that is, cooperation, competition, consideration, creativeness and continuity which are on the basis of such ecological principles as “Symbiotic Effect”, “Niche”, “Laws Limiting Factor”, “Law of Tolerance”, “the Most Appropriate Principle”, “Flowerpots Effect”. The efficiency and practicality of college English teaching in non-English speaking countries are able to be obtained by using ecological college English teaching strategies discussed in the paper.
The aim of this study is to cultivate modern college students’ ecological consciousness under the background of current deteriorating ecological crisis. The study shows some college students do not realize the harm of the ecological crisis and are not fully aware that it is each person’s duties and responsibilities to relieve even solve the ecological crisis either. The study also conveys most students have realized the importance of ecological consciousness in solving the current ecological crisis. They also would like to gain ecological consciousness and accept the three ways discussed in the part of discussion of cultivating their ecological consciousness. Because college students are the precious source of the world and thus colleges have the special mission of guiding the social trend, developing the social culture and making contributions to spiritual construction, it is absolutely urgent and necessary for colleges to make any effort to cultivate college students’ ecological consciousness.
In this study, several ZnO catalysts were prepared using different zinc sources as precursors. The different catalyst mor- phologies obtained were used to degrade photocatalytically a methyl orange (MO) dye solution, which was used to model wastewater pollution. The precursors, Zn(CH3COO)2, ZnCl2 and Zn(NO3)2, were individually added to a solution containing cetyltrimethylammonium bromide (CTAB) and sodium hydroxide (NaOH) for the hydrothermal synthesis of ZnO. After the hydrothermal reaction, the samples of ZnO were filtered, washed, dried at 110?C and calcined at 550?C, resulting in the formation of the rod-like (designated ZnO(I)), the rice-like (designated ZnO(II)) and the granular-like (designated ZnO(III)) catalysts. The catalysts were characterized by X-ray diffraction (XRD), field-emission scanning electron microscope (FE-SEM) and their UV-visible diffuse reflectance spectra (UV-Vis DRS). The results indicate that the photocatalytic degradation of the MO solution, after 60 min of UV irradiation, can reach percentages of 40%, 96% and 99% using the catalysts ZnO(I), ZnO(II) and ZnO(III), respectively. The morphology of the ZnO catalyst had an ap-
It is easy for us to make a conclusion that Holden loves nature, admires nature and lives in harmony with nature. Meanwhile, he prefers simple life style. Unfortunately, he is always misunderstood, excluded and even persecuted by the people around him and there are few people who share his ambitions and outlook on life. Holden’s life situation is similiar to the modern environmentalists, so the aim of the paper is to remind people that each citizen is supposed to fully understand and support the environmentalists’ holly mission.
paper obtains optimal settings of each parameter on a supply chain composed of
a rational manufacturer and a fair retailer. Through the establishment of model
under information symmetry and information asymmetry, in which the effort level
of retailer can’t be observed by manufacturer, the impact of retailer’s
fairness on his effort level and manufacturer’s utility are explored and
investigated. From the comparison, this paper find that retailer’s effort level
and manufacturer’s utility under information asymmetry are higher than those
under information symmetry, and the difference is directly proportional to the
degree of retailer’s fairness. Retailer’s fairness has positive effect on his
effort level and manufacture’s utility under information asymmetry, and
manufacturers tend to cooperate with the retailer who has higher degree of