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【单选题】Most gulls don"t bother to learn more than the simplest facts of flights how to get from shore to food and back again. For most gulls, it is not flying that matter, but eating. For this gull, though, ...
A.
They wanted to learn from Jonathan Livingston Seagull in practicing flight skills
B.
His parents encouraged Jonathan Livingston Seagull to improve his techniques
C.
They felt shameful when they saw the low flying by Jonathan Livingston Seagull
D.
They could not understand why Jonathan Livingston Seagull spent energy and time experimenting slides