----- Nội dung dịch tự động từ ảnh -----
With the freezing-cold air below, heavy fog formed. Pollution from factories, cars and coal
stoves mixed with the fog. The humidity was terribly high, there was no breeze at all. Traffic
such as cars, trains, boats stopped. People couldn't see, and some walked onto the railroad
tracks or into the river. It was hard to breathe, and many people got sick. Finally, on Tuesday,
December 9, the wind came and the fog went away. But after that, even more people got sick.
Many of them died.
1. Which "natural disaster' isn't mentioned in the passage?
A. a tornado
B. a volcano
C. a flood
2. What is the writer's unforgettable personal experience?
A. the London killer
B. the heavy fog in London in 1952
C. a high-pressure system
3. How long did the 'London Killer Fog' last?
A. For four days
B. For five days
C. For six days
4. What didn't happen during the time of the 'London Killer Fog"?
A. Pollution
B. Heavy rain
C. Heavy fog
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