This paper covers the task-based approach,including its definition,types of tasks,principles and features,teacher’s role and learner’s role.The author has studied many researchers’opinions and researches,and then p...This paper covers the task-based approach,including its definition,types of tasks,principles and features,teacher’s role and learner’s role.The author has studied many researchers’opinions and researches,and then puts forward her own ideas on task-based approach.The paper contributes to the improvement of the college English teaching,and the author would like to share her opinion with others in pedagogical studies of teaching college students English.展开更多
The Varzaghan district at the northwestern margin of the Urumieh–Dokhtar magmatic arc, is considered a promising area for the exploration of porphyry Cu deposits in Iran. In this study we identified mono-and multi-el...The Varzaghan district at the northwestern margin of the Urumieh–Dokhtar magmatic arc, is considered a promising area for the exploration of porphyry Cu deposits in Iran. In this study we identified mono-and multi-element geochemical anomalies associated with Cu–Au–Mo–Bi mineralization in the central parts of the Varzaghan district by applying the concentration–area fractal method. After mono-element geochemical investigations, principal component analysis was applied to ten selected elements in order to acquire a multi-element geochemical signature based on the mineralization-related component. Quantitative comparisons of the obtained fractal-based populations were carried out in accordance with known Cu occurrences using Student's t-values. Then,significant mono-and multi-element geochemical layers were separately combined with related geologic and structural layers to generate prospectivity models, using the fuzzy GAMMA approach. For quantitative evaluation of the effectiveness of different geochemical signatures in final prospectivity models, a prediction-area plot was adapted. The results show that the multi-element geochemical signature of principal component one(PC1) is more effective than mono-element layers in delimiting exploration targets related to porphyry Cu deposits.展开更多
Recently, a great tide of English teaching reform swept across China, advocating the innovation of educational concept and teaching mode. However, the phenomenon of rigid uniformity in teaching process is still common...Recently, a great tide of English teaching reform swept across China, advocating the innovation of educational concept and teaching mode. However, the phenomenon of rigid uniformity in teaching process is still commonly seen, neglecting the individual discrepancy of students. The individual discrepancy is manifested by both the congenital heredity and the acquired disposition. Supported by the Chinese traditional theory of teaching students in accordance with their aptitude and Vygotsky's "the zone of proximal development" theory, this paper illustrates the importance of paying attention to the individual discrepancy from the perspective of students' growing background and personality. In addition, standing on the point of view of relevant authority and English teacher, the author tries to put forward some countermeasures.展开更多
文摘This paper covers the task-based approach,including its definition,types of tasks,principles and features,teacher’s role and learner’s role.The author has studied many researchers’opinions and researches,and then puts forward her own ideas on task-based approach.The paper contributes to the improvement of the college English teaching,and the author would like to share her opinion with others in pedagogical studies of teaching college students English.
文摘The Varzaghan district at the northwestern margin of the Urumieh–Dokhtar magmatic arc, is considered a promising area for the exploration of porphyry Cu deposits in Iran. In this study we identified mono-and multi-element geochemical anomalies associated with Cu–Au–Mo–Bi mineralization in the central parts of the Varzaghan district by applying the concentration–area fractal method. After mono-element geochemical investigations, principal component analysis was applied to ten selected elements in order to acquire a multi-element geochemical signature based on the mineralization-related component. Quantitative comparisons of the obtained fractal-based populations were carried out in accordance with known Cu occurrences using Student's t-values. Then,significant mono-and multi-element geochemical layers were separately combined with related geologic and structural layers to generate prospectivity models, using the fuzzy GAMMA approach. For quantitative evaluation of the effectiveness of different geochemical signatures in final prospectivity models, a prediction-area plot was adapted. The results show that the multi-element geochemical signature of principal component one(PC1) is more effective than mono-element layers in delimiting exploration targets related to porphyry Cu deposits.
文摘Recently, a great tide of English teaching reform swept across China, advocating the innovation of educational concept and teaching mode. However, the phenomenon of rigid uniformity in teaching process is still commonly seen, neglecting the individual discrepancy of students. The individual discrepancy is manifested by both the congenital heredity and the acquired disposition. Supported by the Chinese traditional theory of teaching students in accordance with their aptitude and Vygotsky's "the zone of proximal development" theory, this paper illustrates the importance of paying attention to the individual discrepancy from the perspective of students' growing background and personality. In addition, standing on the point of view of relevant authority and English teacher, the author tries to put forward some countermeasures.
