1996年5月托福阅读全真试题
45.With what topic is the passage primarily concerned?
(A) The importance of snowfall for Mount Rainier.
(B) The steam caves of Mount Rainier.
(C) how ice covers are destroyed.
(D) The eruption of Mount Saint Helens in 1980.
46.The word "they" in line 2 refers to
(A) fields
(B) intervals
(C) eruptions
(D) enemies
47.According to the passage long periods of volcanic inactivity can lead to a volcanic cone's
(A) strongest eruption
(B) sudden growth
(C) destruction
(D) unpredictability
48.The second paragraph mentions all of the following as necessary elements in the creation of steam caves EXCEPT
(A) a glacier
(B) a crater
(C) heat
(D) snow
49.According to the passage, heat from Mount Rainier's summit craters rises from
(A) crystalline ice
(B) firns
(C) chambers
(D) fumaroles
50.In line 37 "smothering" the caverns means that they would be
(A) eliminated
(B) enlarged
(C) prevented
(D) hollowed