阅读真题

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 26__________ .
When a tree first starts growing in a certain area, it's likely that the 27__________ envelope-the temperature, humidity, rainfall patterns and so on-suits it. Otherwise, it would be unable to grow from a seedling. But as it 28__________ , these conditions may change and the area around it may no longer be suitable for its 29__________ .
When that happens, many trees like walnuts, oaks and pines, rely 30__________ 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 31__________ 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 32__________ the whitebark pine.
As trees outgrow their ideal 33__________ in the face of climate change, these flying ecosystem engineers could be a big help in 34__________ trees. It's a solution for us-getting birds to do the work is cheap and effective--and it could give 35__________ oaks and pines the option to truly "make like a tree and leave".
A) ages
B) breathing
C) climatic
D) elsewhere
E) exclusively
F) forever
G) fruitful
H) habitats
I) legacy
J) notably
K) offspring
L) replanting
M) subsequently
N) vulnerable
O) withdraws

参考答案

26.D.elsewhere
27.C.climatic
28.A.ages
29.K.offspring
30.E.exclusively
31.M.subsequently
32.J.notably
33.H.habitats
34.L.replanting
35.N.vulnerable