Because of this _________, water is always moving from place to place on Earth.
举一反三
- Deserts and high mountains have always been a ________ to the movement of people from place to place.
- Earth Hour takes place in ________.
- You feel cool when you are near a lake or an ocean because （）. A: the water is cold B: the earth is hot C: the water is colder that the earth D: the cool air from the water moves towards the land
- Why does the earth become cool? A: Because the sun gives the heat to the earth. B: Because the moon gives the wind to the earth. C: Because the earth rotates . D: Because the sun's heat bounces to the space.
- Protecting the earth is a worldwide question because ______ A: pollution is everywhere in the world B: polluted air and water in one place affects distant areas C: people all over the world are responsible for the pollution problem D: all of the above