A.Because it has lost its natural instincts.
B.Because there is not a complete ecochain.
C.Because there is no space for it.
D.Because uncontrolled hunting has destroyed its natural living conditions.
72.How is the programme of sending several tigers to South Africa getting on?
A.Its effect still remains to be seen.
B.Two tigers can already compete with their wild cousins.
C.Some of the tigers are already on the road to recovering their natural skills.
D.The tigers should be able to recover their instincts completely by 2007.
73.By saying “but they are nothing like their wild cousins”, the writer means that________.
A.they are no longer feared by other wild animals
B.they don't know how to hunt or kill
C.a complete change has resulted in the species because of breeding
D.to reintroduce them into the wild has become an urgent task
74.What is the purpose of sending young tigers to South Africa?
A.To help the tigers recover their ability to live in the wild.
B.To provide them with a better environment.
C.To get the tigers to go on a tour.
D.To find a complete ecochain for them.
75.Which one is NOT the reason for South Africa being chosen as the training place?
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