2-C. (1) describe the history of mountain climbing on each continent.(1) describe the history of mountain climbing on each continent.
(1)歴史を説明すること、登山のダヨ、各大陸のダヨ。
continents大陸
3-C. The other set, the Seven Summits, refers to the highest mountain on each of the seven continents of the world.The other set, the Seven Summits, refers to the highest mountain on each of the seven continents of the world.