3. The author compares the surging motion of a surge glacier to the movement of a

　　(A) fish

　　(B) wave

　　(C) machine

　　(D) boat

　　4. Which of the following does the author mention as a possible cause of surging glaciers?

　　(A) The decline in sea levels

　　(B) The occurrence of unusually large ocean waves

　　(C) The shifting Antarctic ice shelves

　　(D) The pressure of meltwater underneath the glacier

　　5. The word freeing in line 7 is closest in meaning to

　　(A) pushing

　　(B) releasing

　　(C) strengthening

　　(D) draining

　　6. According to the passage , the Hubbard Glacier

　　(A) moves more often than the Valerie Glacier

　　(B) began movement toward the sea in 1895

　　(C) is 800 feet wide

　　(D) has moved as fast as 47 feet per day

　　7. Yakutat is the name of

　　(A) an Alaskan town

　　(B) the last ice age

　　(C) a surge glacier

　　(D) an Antarctic ice shelf

　　8. The word plunge in line 22 is closest in meaning to

　　(A) drop

　　(B) extend

　　(C) melt

　　(D) drift

　　9. The term vicious cycle in line 24 refers to the

　　(A) movement pattern of surge glaciers

　　(B) effect surge glaciers could have on the temperature of tropical areas

　　(C) effect that repeated rising sea levels might have on glacial ice

　　(D) constant threat surge glaciers could pose to the Gulf of Alaska

　　10. The author provides a definition for which of the following terms?

　　(A) tributary (line 15)

　　(B) ice dam (line 16)

　　(C) albedo (line 25)

　　(D) interglacial(line 26)

　　11. Which of the following statements is supported by the passage ?

　　(A) The movement of surge glaciers can be prevented.

　　(B) The next ice age could be caused by surge glaciers.

　　(C) Surge glaciers help to support Antarctic ice shelves.

　　(D) Normal glaciers have little effect on Earth's climate.

　　PASSAGE 38 BDBDB DAACD B