A
Typhoons are one of the worst storms, usually around the Pacific Ocean. Most typhoons happen in July, August and September.
How does a typhoon happen? When lots of seawater gets hot in summer, it evaporates (蒸发) into the air. This makes the air hotter. When the air gets warm enough, it starts to move higher up into the sky. Then cooler air around it rushes in. It fills the space that is left. After the air gets warmer, it starts to move quickly, making wind. The wind goes in circles and keeps moving higher in the sky. The warmer the air gets, the more quickly the wind moves. And when the wind moves faster than 30 metres a second, a typhoon starts.
A typhoon has two parts, and one is called the "eye". In the eye, the winds do not move so fast. The other part is the wall of clouds around the eye. Here are the strongest winds and hardest rain.
Typhoons are very dangerous. What should you do when a typhoon hits?
· Stay in buildings. Close all the windows and stay away from them.
· Try to bring all of your things inside. Strong wind could even blow away bikes!
· Listen to the radio or watch TV for the important and latest information.
· If you're told to go to a safer place by your community, do it right now.
(
D
) 26. This passage is most probably from ______.
A. an advertisement B. a travel journal
C. a weather report D. a science magazine
(
A
) 27. Typhoons often happen ______.
A. in the hot season B. in the cold season
C. only in China D. under the sea
(
B
) 28. In which order does a typhoon happen?
a. The wind moves faster than 30 metres a second.
b. The air moves quickly, making wind.
c. The sun makes seawater hot.
d. The air gets warmer and moves higher.
A. dcba B. cdba C. cdab D. dbac
(
C
) 29. Which of the following is true according to the passage?
A. The warmer the air gets, the more slowly the wind moves.
B. A few people died because of typhoons all around the world.
C. The strongest winds and hardest rain are in the wall of clouds.
D. A typhoon starts when the wind goes faster than 30 km a second.
(
D
) 30. When a typhoon comes, we'd better NOT ______.
A. close all the windows B. listen to typhoon news
C. stay in strong houses D. go outside to check
