历年雅思阅读真题精选一_第3页

Which paragraph compares the eruption to the energy A

released by nuclear bomb?

1. Which paragraph describes the evacuation of the mountain?

2. Which paragraph describes the moment of the explosion of Mount St. Helens?

Questions 3 and 4

3. What are the dates of the TWO major eruptions of Mount St. Helens before 1980?

Write TWO dates in box 3 on your answer sheet.

4 How do scientists know that the volcano exploded around the two dates above?

Using NO MORE THAN THREE WORDS , write your answer in box 4 on your answer

sheet

Questions 5-8

Complete the summary of events below leading up to the eruption of Mount St. Helens. Choose

NO MORE THAN THREE WORDS from the passage for each answer.

Write your answers in boxes 5-8 on your answer sheet.

In 1979 the Geological Survey warned ... (5) ... to expect a violent eruption before the end of the

century. The forecast was soon proved accurate. At the end of March there were tremors and

clouds formed above the mountain. This was followed by a lull, but in early May the top of the

mountain rose by ... (6)... . People were ...(7) ... from around the mountain. Finally, on May 18th

at ...(8) ..., Mount St. Helens exploded.

Question 9 and 10

Complete the table below giving evidence for the power of the Mount St. Helens eruption.

Write your answers in boxes 9 and 10 on your answer sheet.

Item Equivalent to

Example

The energy released by the explosion of

Mount St. Helens

Answer

500 nuclear bombs

The area of land covered in mud or ash ...(9)...

The quantity of dust ejected ...(10)...

Question 11

Choose the appropriate letter A-D and write it in box 11 one your answer sheet.

11. According to the text the eruption of Mount St. Helens and other volcanoes has influenced our

climate by ...

A increasing the amount of rainfall.

B heating the atmosphere.

C cooling the air temperature.

D causing atmospheric storms.