Page 61 - TOEFL_Basic-2

Test

Step 1
e passage.

Yellowstone Park
Supervolcanoes are the most hazardous volcanoes on Earth. When they
explode they can change the whole world. The Yellowstone Caldera in the US is
thought to be an active one. It has erupted three times in the last 2 million years.
It is in the middle of a large park that is geologically active. It is well known all
over the world . Old lava flows cover most of the land there. The energy from it
heats thousands of springs and mud pools

Step 2
o the lecture and take notes. I흩g롤]
‘ ’
Hotspots
• One of the best known is
Yellowstone Park
• It has several craters called
• The Yellowstone Caldera is

Supervolcanoes
• When they erupt
• They can
Yellowstone Caldera
• Has not erupted
• Under it is
• It is covered in
Geysers
• Are where hot water and
• There are

Step 3

prompt.
The professor and the passage talk about Yellowstone Park. Explain what is
there and how the park is geologically active.

72 Speaking