6. According to the passage , when was the National Marine Sanctuaries Program established?

　　(A) before 1972

　　(B) after 1987

　　(C) one hundred years before national parks were established

　　(D) one hundred years after Yellowstone National Park was established

　　7. According to the passage , all of the following are achievements of the National Marine Sanctuaries Program EXCEPT

　　(A) the discovery of several new marine organisms

　　(B) the preservation of connections between individual marine species

　　(C) the protection of coastal habitats

　　(D) the establishment of areas where the public can observe marine life

　　8. The word "periphery" in line 24 is closest in meaning to

　　(A) depth

　　(B) landmass

　　(C) warm habitat

　　(D) outer edge

　　9. The passage mentions which of the following as a threat to marine areas outside the United States?

　　(A) limitations in financial support

　　(B) the use of marine species as food

　　(C) variability of the climate

　　(D) increases in tourism

　　參考答案：BCADB DADD