填空题 Look at the four squares, , , , and , which indicate where the following sentence could be added to the passage. Where would the sentence best fit?
Both biological and chemical oceanographers are trying to make ocean life and industrial progress compatible so marine ecosystems will not be endangered.
Within the field of oceanography, the major areas stressed are physical, biological, chemical, geological, engineering, and technological. However, each of these areas is interdependent of the others. Both physical oceanographers and ocean engineers are involved in harnessing the energies of the ocean to fill the demand for electrical power. Even if oceanographers have an area of major interest, they are consistently forced to take a more interdisciplinary view of their work because the various sciences overlap. Oceanographers of different backgrounds depend on each other to further their own research.