Based on the experience and lessons from previous control of lakes, as well as the present situation of water eutrophication and outbreak of blue-green algae in lakes, general ideas of controlling outbreak of blue-gre...Based on the experience and lessons from previous control of lakes, as well as the present situation of water eutrophication and outbreak of blue-green algae in lakes, general ideas of controlling outbreak of blue-green algae in large and middle lakes were proposed. Firstly, it is needed to control serious outbreak of blue-green algae and then build health aquatic ecosystems and corresponding control goals finally. Secondly, quantity of blue-green algae in lakes and lake eutrophication should be reduced at the same time. Thirdly, quantity of reduced blue-green algae must exceed the natural increase of them in quantity persistently, so that outbreak of blue-green algae will reduce and even be eliminated. Fourthly, engineering measures and corresponding safeguard measures to control outbreak of blue-green algae in lakes should be combined.展开更多
The Great Gatsby narrates a symbolist tragedy in a transitional era.It’s ambivalent characterizationand themes find justifications in the writer’s own ideology of two opposed ideas ,and in his efforts to define andj...The Great Gatsby narrates a symbolist tragedy in a transitional era.It’s ambivalent characterizationand themes find justifications in the writer’s own ideology of two opposed ideas ,and in his efforts to define andjudge subjects of social problems.The ambivalent characterization concerns the writer’s dual response to theprotagonist’s corruption and innocence respectively.Ultimately the writer is convinced that both the corruptionand innocence are justifiable in the morality of his protagonist.Whereas the ambivalent themes dealing withthe American dream attach importance to the social class perspectives and the vision of history,undoubtedlythe writer slides into a compromise with his themes:repudation and approval.Because of the equally strong in-terplay of two opposed ideas,the writer fails to locate a definite position and scale,which results in his imma-ture control in the art of the work.The writer’s characteristic code and achievement are significant becausethey genuinely reveal human being’s fundamental dilemma in social life.展开更多
文摘Based on the experience and lessons from previous control of lakes, as well as the present situation of water eutrophication and outbreak of blue-green algae in lakes, general ideas of controlling outbreak of blue-green algae in large and middle lakes were proposed. Firstly, it is needed to control serious outbreak of blue-green algae and then build health aquatic ecosystems and corresponding control goals finally. Secondly, quantity of blue-green algae in lakes and lake eutrophication should be reduced at the same time. Thirdly, quantity of reduced blue-green algae must exceed the natural increase of them in quantity persistently, so that outbreak of blue-green algae will reduce and even be eliminated. Fourthly, engineering measures and corresponding safeguard measures to control outbreak of blue-green algae in lakes should be combined.
文摘The Great Gatsby narrates a symbolist tragedy in a transitional era.It’s ambivalent characterizationand themes find justifications in the writer’s own ideology of two opposed ideas ,and in his efforts to define andjudge subjects of social problems.The ambivalent characterization concerns the writer’s dual response to theprotagonist’s corruption and innocence respectively.Ultimately the writer is convinced that both the corruptionand innocence are justifiable in the morality of his protagonist.Whereas the ambivalent themes dealing withthe American dream attach importance to the social class perspectives and the vision of history,undoubtedlythe writer slides into a compromise with his themes:repudation and approval.Because of the equally strong in-terplay of two opposed ideas,the writer fails to locate a definite position and scale,which results in his imma-ture control in the art of the work.The writer’s characteristic code and achievement are significant becausethey genuinely reveal human being’s fundamental dilemma in social life.
