听第10段材料,回答第17至20题。17 Where is the Mariana Trench? A A. In the eastern Pacific Ocean. B. In the west of the Indian Ocean. C. To the east of the Mariana Islands.18 How deep is the fish living? B A. Over 8 miles deep. B. About 5 miles deep. C. Around 14 miles ...
Where is the Ross Sea? What sea is west of Yugoslavia? Where are the Altai and Caucasus Mountains situated? What continent is the Caspian Sea located on? Where is the Tasman Sea? Where is the Kola Peninsula? Where is the Antarctic Ocean? Where is the Mariana Trench? What continent is th...
What is the Mariana Trench and its tectonic plates? What is seismic zone D? Where is groundwater stored? Where do shallow earthquakes occur? Where is soapstone mined? What are the parts of a topographic map? Where does seafloor spreading occur? Where does gully erosion occur? Where are abys...