12.Along the river banks of the Amazon and the Orinoco there lives a bird that swims before it can fly,flies like a fat chicken,eats green leaves,has the stomach of a cow and has claws (爪) on its wings when young.They build their homes about 4.6m above the river,an important feature (特征) for the safety of the young.It is called the hoatzin.
In appearance,the birds of both sexes look very much alike with brown on the back and cream and red on the underside.The head is small,with a large set of feathers on the top,bright red eyes,and blue skin.Its nearest relatives are the common birds,cuckoos.Its most striking feature,though,is only found in the young.
Baby hoatzins have a claw on the leading edge of each wing and another at the end of each wing tip.Using these four claws,together with the beak (喙),they can climb about in the bushes,looking very much like primitive birds must have done.When the young hoatzins have learned to fly,they lose their claws.
During the drier months between December and March hoatzins fly about the forest in groups of 20 to 30 birds,but in April,when the rainy season begins,they collect together in smaller living units of two to seven birds for producing purposes.
63.What is the text mainly about?D
A.Hoatzins in dry and rainy seasons.
B.The relatives and enemies of hoatzins.
C.Primitive birds and hoatzins of the Amazon.
D.The appearance and living habits of hoatzins.
64.Young hoatzins are different from their parents in thatB.
A.they look like young cuckoos
B.they have claws on the wings
C.they eat a lot like a cow
D.they live on river banks
65.What can we infer about primitive birds from the text?A
A.They had claws to help them climb.
B.They could fly long distances.
C.They had four wings like hoatzins.
D.They had a head with long feathers on the top.
66.Why do hoatzins collect together in smaller groups when the rainy season comes?D
A.To find more food.
B.To protect themselves better.
C.To keep themselves warm.
D.To produce their young.
分析 本文讲述了在亚马逊和奥里诺科河的河岸生活的一种鸟类,文章介绍了它的生活习性,外貌特征和气候对其生活的影响.
解答 63.D.主旨大意题.纵观全文,文章主要讲的是hoatzin麝雉,这种鸟类的外貌以及生活习性.故选D.
64.B..细节理解题.根据第一段has claws(爪)on its wings when young,和第三段可知,hoatzin在幼年期是有爪子的,而长大学会飞之后就没有了.故选B.
65.A.推理预测题.根据文章第三段"Using these four claws,together with the beak (喙),they can climb about in the bushes,looking very much like primitive birds must have done"可知,原始鸟和小麝雉一样有爪子帮助他们攀登.故选A.
66.D.细节理解题.根据文章最后一段"when the rainy season begins,they collect together in smaller living units of two to seven birds for producing purposes."可知,他们聚集在一起要生产下一代.故选D.
点评 本篇阅读理解主要考查考生对书面语篇的整体领悟能力和接受及处理具体信息的能力,文章中词汇的意义比较单一、稳定、简明,不带感情色彩,具有单一性和准确性的特点.学生应该挖掘寓意,掌握中心思想,推出结论.要立足于文章整体,再迅速读一遍短文,短文中的问题和答案的设置前后都是相关联的,有着一定的连续性,体现着文章的基本脉络.