阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。 kiwis are endangered little birds native to new zealand. it ____ (believe) that these small birds exist as a result of new zealand's isolation (隔离)from the other parts of the world, forcing animals there ____ (adapt)and evolve (进化)so as to be able to survive and reproduce. the evolution is what has led to the present____(appear) of the kiwi bird. kiwis are a national symbol of new zealand, with the name kiwi ____(be) associated with many things in new zealand including their famous rugby national team. kiwis have excellent memories and can remember something that ____(happen) as long as five years back. even though they have feathers, their feathers look and feel ____ (much) like hair rather than feathers. this enables them to be able to hide in a bush and go ____ (complete) unnoticed by their natural enemies. unlike most birds, the kiwi bird has a great sense of smell ____ enables them to sniff out prey (猎物)hidden in bushes and underground. the smallest kiwi bird has ____ height of 45 centimeters and wight of 2 kilograms while the largest kiwi can grow____ 50 centimeters tall and can weigh 3.5 kilograms.
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