The tree people in the Lord of the Rings—the Ents—can get around by walking.

游客2023-08-10  16

问题     The tree people in the Lord of the Rings—the Ents—can get around by walking. But for real trees, it’s harder to uproot. Because they’re literally rooted into the ground, they are unable to leave and go【C1】______.
    When a tree first starts growing in a certain area, it’s likely that the【C2】______envelope—:the temperature, humidity, rainfall patterns and so on—suits it. Otherwise, it would be unable to grow from a seedling. But as it【C3】______, these conditions may change and the area around it may no longer be suitable for its【C4】______.
    When that happens, many trees like walnuts, oaks and pines, rely【C5】______on so-called "scatter hoarders," such as birds, to move their seeds to new localities. Many birds like to store food for the winter, which they【C6】______retrieve.
    When the birds forget to retrieve their food—and they do sometimes—a seedling has a chance to grow. The bird Clark’s nutcracker, for example, hides up to 100,000 seeds per year, up to 30 kilometers away from the seed source, and has a very close symbiotic(共生的)relationship with several pine species, most【C7】______the whitebark pine.
    As trees outgrow their ideal【C8】______in the face of climate change, these flying ecosystem engineers could be a big help in【C9】______trees. It’s a solution for us—getting birds to do the work is cheap and effective—and it could give【C10】______oaks and pines the option to truly "make like a tree and leave. "
A)ages I)legacy
B)breathing J)notably
C)climatic K)offspring
D)elsewhere L)replanting
E)exclusively M)subsequently
F)forever N)vulnerable
G)fruitful O)withdraws
H)habitats [br] 【C8】

选项

答案 H

解析 空格位于形容词ideal之后,处在以As引导的时间状语从句的宾语部分,据此判断可填入名词,又因为主语为trees,因而此处应为名词的复数形式。备选项中,只有H)habitats“栖息地,生长环境”符合此处语法要求。本句意为“随着树的生长超出其理想的生长环境的适应限度”。备选项中,legacy意为“遗产”,与本句句意不符,故排除。
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