ISEE Reading Question 280: Answer and Explanation
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Question: 280
2. The first sentence implies that
- A. Mount St. Helens had never before erupted
- B. Mount St. Helens erupts every 123 years
- C. Mount St. Helens last erupted in 1857
- D. no one suspected that Mount St. Helens could erupt
Correct Answer: C
Explanation:
C is correct. A 123–year slumber means that Mount St. Helens had no eruptions going back 123 years from 1980. That puts the last eruption at 1857. Choice A is wrong because if Mount St. Helens had been “sleeping” for 123 years, it must have been active 123 years ago. Choice B is wrong because there is nothing to support the idea that Mount St. Helens erupts every 123 years. Choice D is wrong because if Mount St. Helens erupted 123 years ago, it could always erupt again.