This is the map of Earth. The map uses colour to show parts of Earth that are covered by land and water. The map uses white to show large sheets of ice and snow called glaciers (冰川). The map's legend（图例）, or information box, shows the feature that each colour represents.
-
（1）
Which of the following are shown on the map?
A . Water under the ground.
B . Water in clouds.
C . Water in oceans.
D . Water frozen in glaciers.
-
-
（2）
Complete the sentence. The surface of Earth is covered mostly by _________.
A . salt water found in rivers and lakes
B . fresh water found in rivers and lakes
C . salt water found in ocean
D . fresh water found in ocean
-
