阅读理解。
Look at that eagle (鹰). It is going up into the sky. But it's not moving its wings. How can it rise
without moving its wings? The big bird is riding up on the wind. It lets the wind carry it up.
What makes winds blow up? Wind is just moving air which goes up when it is warmed. Hear
makes the air rise. The sun warms the land. The land warms the air about it . The warm air rises from
the land. The eagle rides up on it.
1. What's wind? It's _______.
A. moving air
B. air
C. land
D. heat
2. The eagle can go up into the sky without moving its wings because _______.
A. it is not heavy itself
B. the wind carries it up
C. it is a very big bird
D. its wings are very light
3. When air is warm, it _______.
A. goes up
B. keeps still
C. moves around
D. comes down
4. The land is warmed by _______.
A. the big bird
B. the earth
C. the eagle's wings
D. the sun
5. The best title (题目) for this article is _______.
A. The land
B. The sky
C. The Eagle
D. Winds
