Exercise B Read each group of words at a glance

Do you know what a tornado is ?  A tornado is a strong windstrom that travels over flat land. It looks like a cloud, but has the shape of a triangle. It's wind is so fast and so strong it can pick up a person, or move a car. Sometimes, strong tornadoes pull up trees and move houses. People say tornadoes can also move buildings.

Texas has lots of tornadoes. In that state, tornadoes come in springtime. People there say the tornado months are April, May and June.

The afternoon's the time of day when you see tornadoes start up. In those months, strong winds will often start at four p.m.

They usually stop around eight in the evening.