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In the mid-nineteenth century, the first White visitors to California's Yosemite Valley were enchanted by the open, parklike landscape with its meadows and open oak groves, but they could not comprehend that this openness was maintained by fires set by the indigenous inhabitants as part of their land-management practices. This incomprehension is part of the origin of the century of fire suppression that led to overgrown forests and devastating wildfires across the American West. The fire suppression built up dangerous fuel loads that would make fire catastrophic, and it had other effects. Sequoias, for example, only regenerate after fire, which sterilizes the soil, makes their cones release their seeds, and creates openings in the tree canopy through which sunlight can reach the forest floor.

Which of the following can be inferred about the "fire suppression" discussed in the passage?

A.It was a land-management practice that was carried out primarily in the Yosemite Valley.
B.It provided important benefits to sequoias and other large trees in the Yosemite Valley.
C.It was a land-management practice that White visitors learned from the Yosemite Valley's indigenous inhabitants.
D.It was not conducive to the open parklike landscape that early White visitors encountered in the Yosemite Valley.
E.It was something that early White visitors to the Yosemite Valley tried to discourage.

D显示答案

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