Information and IdeasVery hardMain idea of a passage on a dam's forecasts
Information and Ideas practice question
The case for the dam rested on a forecast that the region's population would grow by a third and that industry would take half the water. The population grew by a tenth, and the industry moved elsewhere. The reservoir has never been more than two-thirds full, and the dam that was to secure the region's future now consumes a tenth of the water board's budget in maintenance.
Which choice best states the main idea of the text?
- A. The dam was justified by forecasts that did not come true, leaving an underused structure that is costly to maintain.Correct
- B. The dam has secured the region's water supply.
- C. The region's population grew faster than expected.
- D. The reservoir is usually full.
Answer: A. The dam was justified by forecasts that did not come true, leaving an underused structure that is costly to maintain.
Forecasts failed; the dam is half-used and expensive.
Why the other answers are wrong
- B. The dam has secured the region's water supply.
- It is described as an unmet promise.
- C. The region's population grew faster than expected.
- It grew by a tenth, not a third.
- D. The reservoir is usually full.
- Never more than two-thirds full.
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