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

游客2023-08-10  6

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] 【C2】

选项

答案 C

解析 空格位于名词envelope之前,据此判断可填入形容词,构成固定搭配。envelope意为“信封”,信封中放有信件,按照常识判断,此处应为比喻的用法,表示包含了一整套具体指标,如温度、湿度、降雨模式等,又因为这些因素都隶属于气候的大范畴,由此判断,答案为C)climatic“气候的”。备选项中,fruitful意为“果实累累的,富有成效的”,vulnerable意为“脆弱的,易受伤害的”,均不符合句意,故排除。
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