题目内容：
根据以下材料，回答题Then blacken the corresponding leer on the Answer Sheet．Visitors to the ZOO usually pity the animals owing to their particular emotional associations(联想)．Which animals should be indeed pitied?
The first type are those clever and56__________ developed animals57_________ lively intelligence and desire for activity can 58_________no outlet behind the bars of the cage．Those animals living in a freestate before59_________in the ZOO have a strong desire for moving about 60_________，but have to turn around repeatedly in their quarters．Owing to this disappointment，foxed and wolves 6l_________inplaces which are far too small，are among the most 62_________0f all ZOO animals．
Another sad scene，seldom63_________by ordinary ZOO visitors，is the 64_________flying trials of
swans(天鹅)at migration(迁徙)time．These creatures，like most other water birds，are generally made unable to fly by the65_________0f cutting off a tip of the wing bone．66_________such swans in the ZOO generally seem happy under 67_________care and they raise their young without any trouble，at migration time things become 68_________．The birds never really 69_________ that they can no longer fly，and repeatedly swim to the 70_________0f the pond SO that they can have the whole extent of its surface when trying to 71_________against the wind．Meanwhile，their loud flying calls can be heard as they try to 72_________，and again and again the grand preparations end in 73_________．I do not like seeing those 74_________water birds in the Z00．The missing tip of one wing and thestill sadder picture that the bird makes when it 75_________its wings hurt me badly．What a truly sorry picture it is．
第56题的答案是____________ A．high
B．highly
C．deep
D．deeply
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