IV. Read the following text and do the following task

1. A Tornado is a violently rotating column of air that extends from the thunderstorm to the ground ( line 1)

2. lightening and hails ( line 2 )

3. Related thunderstorms  can cause heavy rains, flash flooding, and hail ( line 4,5 )

4. 1,200 tornadoes hit the United States every year ( line 6 )

5.in any seasons, but occur most often in the spring and summer ( line 7 )

$1.$ A tornado is a violently rotating column of air that extends from a thunderstorm to the ground and is often visible as a funnel cloud (Câu đầu tiên)

$2.$ Lightning and hail are common in thunderstorms that produce tornadoes (Câu thứ 2 đoạn 1)

$3.$ Related thunderstorms can cause heavy rains, flash flooding and hail. (Câu cuối đoạn 1)

$4.$ About 1200 tornadoes hit the United States every year. (Câu đầu đoạn 2)

$5.$ They can strike in any season. (Câu đầu đoạn 3)

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