Question 1:A?
Question 2:C
Test analysis:
Question 1: Coral reefs are widely distributed in the sea area of Sansha City, and generally grow in a warm, clean and well-lit tropical shallow sea environment. Therefore, the natural environment of Sansha City is characterized by high temperature all year round and clear and transparent seawater. Option a is correct.
Question 2: Remote sensing (RS) is an extension of human vision, and its main function is to obtain information; The main function of global positioning technology (GPS) is positioning and navigation; The main function of Geographic Information System (GIS) is to store, manage and analyze information. Option c is correct.