_____ 2/ _____ 3/ _____ 4/ _____ 5/ _____ 6/ _____ (23-28) CHOOSE THE WORD OR PHRASE THAT BEST FITS THE BLANK SPACE IN THE FOLLOWING PASSAGE

1/ _____ 2/ _____ 3/ _____ 4/ _____ 5/ _____ 6/ _____

(23-28) Choose the word or phrase that best fits the blank space in the following passage:

A volcano is an opening in the earth’s surface through (23)___________ lava, hot, gases and

rock fragments erupt. (24) ________ an opening occurs when melted rock from deep within the

earth blasts through the surface. Most volcanoes are a top mountains, particularly cone-shaped

mountains. The mountains themselves are also called volcanoes.

Eruptions of volcanic mountains are spectacular sights. In some eruptions, huge fiery clouds

rise over the mountain, and growing rivers of lava flow down (25) _________ sides. In other

eruptions, red- hot ash and cinders shoot out the mountaintop, and large chunks of hot rockare

blasted (26) ________ into the air. A few eruptions are so (27) _________ that they blow the

mountain apart.

Some eruptions occur on volcanic islands. Such islands are the tops of volcanic mountains that

have been built (28) __________ from the ocean floor by repeated eruptions. Other

eruptions occur along narrow cracks in the ocean floor.