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Have you heard of typhoons?
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 (圆圈) 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 begins.
A typhoon has two parts, and one is called the “eye”. In the eye, the wind does not move so fast. The other part is the wall of clouds around the eye. Here is the strongest wind and hardest rain.
Typhoons are very dangerous. So what should we do when a typhoon hits?
· Stay inside. Close all the windows and stay away from them.
· Try to bring all of your things inside. Strong wind could even blow away your bikes!
· Listen to the radio, watch TV or check your phone messages for important information.
· If you’re told to go to a safer place, do it right now.
(
A. an advertisement B. a travel book
C. a weather report D. a science magazine
(
A. in the hot season B. in the cold season
C. only in China D. under the sea
(
a. The wind moves fast enough, and a typhoon starts.
b. The air moves quickly, making wind.
c. The sun makes seawater hot.
d. The air gets warmer.
A. d-c-b-a B. c-d-b-a C. c-d-a-b D. d-b-a-c
(
A. The warmer the air gets, the more slowly the wind moves.
B. Few people died because of typhoons around the world.
C. The strongest wind and hardest rain are in the wall of clouds.
D. A typhoon will not happen before the wind goes faster than 30 km a second.
(
A. open all the windows B. bring things outside
C. watch TV for fun D. stay inside
Have you heard of typhoons?
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 (圆圈) 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 begins.
A typhoon has two parts, and one is called the “eye”. In the eye, the wind does not move so fast. The other part is the wall of clouds around the eye. Here is the strongest wind and hardest rain.
Typhoons are very dangerous. So what should we do when a typhoon hits?
· Stay inside. Close all the windows and stay away from them.
· Try to bring all of your things inside. Strong wind could even blow away your bikes!
· Listen to the radio, watch TV or check your phone messages for important information.
· If you’re told to go to a safer place, do it right now.
(
D
) 1. This passage is most probably from .A. an advertisement B. a travel book
C. a weather report D. a science magazine
(
A
) 2. Typhoons often happen .A. in the hot season B. in the cold season
C. only in China D. under the sea
(
B
) 3. In which order does a typhoon happen?a. The wind moves fast enough, and a typhoon starts.
b. The air moves quickly, making wind.
c. The sun makes seawater hot.
d. The air gets warmer.
A. d-c-b-a B. c-d-b-a C. c-d-a-b D. d-b-a-c
(
C
) 4. Which of the following is true according to the passage?A. The warmer the air gets, the more slowly the wind moves.
B. Few people died because of typhoons around the world.
C. The strongest wind and hardest rain are in the wall of clouds.
D. A typhoon will not happen before the wind goes faster than 30 km a second.
(
D
) 5. When a typhoon comes, we had better .A. open all the windows B. bring things outside
C. watch TV for fun D. stay inside
答案
1. D
2. A
3. B
4. C
5. D
2. A
3. B
4. C
5. D
