Submitted by admin on Mon, 04/14/2014 - 23:25
definition:
Hot fluid or semi-fluid material below or within the earth’s crust from which lava and other igneous rock is formed on cooling
sentence:
What they do know is that a ‘slow rise’ of magma is driving lava to the surface, which has created a new lava dome in the mountain's crater.
difficulty:
medium
toefl frequency:
2
toefl classification: