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The longer the migratory route, the more fat migrating birds must accumulate as fuel for their flight. The gain in body mass would make birds obese by human standards, and should render them unable to fly, but this gain is (i)_____ premigratory (ii)_____ of digestive organs, inactive during migration, and by the (iii)_____ of the muscles that power the flight.
- Blank(i)
- partially offset by
- strongly suggestive of
- seemingly unrelated to
- Blank(ii)
- shrinking
- specialization
- capacity
- Blank(iii)
- strengthening
- attenuation
- responsiveness
partially offset by , shrinking , strengthening 显示答案
以上解析由 考满分老师提供。
