1. 河   island   plateau   river   valley   Hint Half-n-half Clue   2. 瀑布，秋天   waterfall, falls   mountain   sea   glacier   Half-n-half Clue   3. 海   bay   plain   oasis   sea   Half-n-half Clue   4. 冰川   valley   plateau   bay   glacier   Half-n-half Clue   5. 海岛   cape   country   island   river   Half-n-half Clue   6. 沙漠   desert   ocean   plateau   city, town   Half-n-half Clue   7. 海峡   continent   strait   desert   bay   Half-n-half Clue