UNIT 05

　　A tornado is a funnel-shaped strong wind.It never stops whirling andkeeps sucking up dust, houses,cars, trees and everything。It can pull up things into the airand make them fly。Also, it moves very fast atspeeds up to 483 km per hour。It is one of the strongest kinds of storms。There are more than 800 tornados in the United Stateseach year。

　　Select True or False

　　❶ Tornados are one of the strongest storms. (T/F)

　　❷ Tornados move very slowly. (T/F)

　　❸ Tornados don’t exist in the United States. (T/F)

　　More to know

　　描述物件的形容词

　　funnel shape漏斗形的； round shape 圆形的；star shape星形的；

　　triangle shape三角形的 。

　　··It has a funnel shape. 它是漏斗形的。

　　··It has a round shape. 它是圆形的。

　　··It has a star shape. 它是星形的。

　　··It has a triangle shape. 它是三角形的。

　　READING COMPREHENSION

　　*Read and circle the best answer.

　　❶ How does a tornado suck up houses and trees?

　　a. by whirling a wind

　　b. by hitting a wind

　　c. by stopping a wind

　　❷ How many tornados come to the United States each year?

　　a. more than 400 b. more than 600 c. more than 800

　　*Complete the sentence with the right answer。

　　❸ It can pull up things into the and make them fly。

　　a. air b. house c. cloud

　　❹ It moves very fast at speeds up to per hour。

　　a. 483 km b. 648 km c. 843 km

　　DESCRIBE THE PICTURE

　　*Circle the correct sentence

　　❶ A tornado is a round-shaped wind。

　　❷ A tornado is a funnel-shaped wind。

　　❸ A tornado is a triangle-shaped wind。