Question

12．Move as Millions，Survive as OneGreat white sharks in the Pacific Ocean．Wildebeest in Africa．Arctic terns in the Atlantic．At first，these animals seem completely different．One swims，one walks，and the other flies．But they all have one thing in common．They all migrate．
Some migrating groups move to a place with a better temperature．Some go to find food or wather．The groups travel as one，trying to survive（生存）．During the trip，they face many different challenges．One challenge is distance．Some migrating animals take very long trips．They go far away from their home areas．For example，one great white shark swam from Australia to South African and back．In nine months，it swam about 20，000 kilometers．
Another chanllenge is finding enough food and water during the journey．For example，each Malielephant needs over 200 liters of water each day．To get this，they need to go from one waterhole to another．
In addition，migrating animals have to avoid other animals that want to eat them．For example，the zebra has to stay away from lions．Traveling as a group helps keep them safe．All the zebras in the group can watch for danger．When one zebra is in trouble，the other members make a circle around it．
By working as a group，migrating animals can survive some of the world's most extraordinary journeys．

21．The main idea of the first paragraph is thatCanimals migrate．
A．not all kinds of
B．only similar
C．different kinds of
22．The meaning of the underlined word"migrate"means"B"in Chinese．
A．奔跑
B．迁徙
C．追逐
23．The passage talks aboutBbig challenges for the animals．
A．two
B．three
C．four
24．Which of the following statements is NOT true？A
A．It's about 20，000 kilometers from South Africa to Australia．
B．A Malt elephant needs more than 200 liters of water a day．
C．Zebras help each other when they are in trouble．
25．From the passage，we can infer（推断）thatA．
A．lions may cat zebras
B．lions travel in groups
C．lions try to avoid zebras．

Answer 1

分析 本文主要讲述了动物们的迁徙的一些常识．他们迁徙或为舒适的温度，或为食物和水源．文章重点介绍了迁徙过程中动物们面临的三种挑战：距离、足够的食物和水源、安全．

解答 21．C 细节理解题 根据第一段中提到的At first，these animals seem completely different．和They all migrate．
可知第一段主要介绍的是不同种类的动物有一个共同的特点"迁徙"，故选C
22．B 词义猜测题 根据第二段中的Some migrating groups move to a place with a better temperature．Some go to find food or wather．The groups travel as one，trying to survive（生存）．"有些迁徙团体搬到一个温度更适宜居住的地方，有些是为了寻找水源和食物．迁徙团体作为一个整体而出行，设法生存"可知migrate的意思是"迁徙"，故选B
23．B 细节理解题 One challenge is distance（一个挑战是距离）．Another chanllenge is finding enough food and water during the journey．（另一个挑战是在旅途中找到足够的食物和水） 和In addition，migrating animals have to avoid other animals that want to eat them（除此之外，迁徙动物必须避开想吃掉它们的动物），由此可知这篇文章介绍了迁徙动物旅途中遇到的三大挑战．故选B
24．A 细节理解题 根据原文中的For example，one great white shark swam from Australia to South African and back．In nine months，it swam about 20，000 kilometers．（一只大白鲨从澳大利亚游到南非然后返回，九个月的时间里，游大约两万公里，可知从澳大利亚到南非大约一万公里），选项A的意思是"从南非到澳大利亚大约两万公里"这种说法是错误的，根据原文中的each Mali elephant needs over 200 liters of water each day．可知选项B正确；根据原文中的All the zebras in the group can watch for danger．When one zebra is in trouble，the other members make a circle around it．可知选项C正确；故选A
25．A 推理判断题 根据原文中的In addition，migrating animals have to avoid other animals that want to eat them．For example，the zebra has to stay away from lions．（除此之外，迁徙动物必须避开想吃掉它们的动物，例如，斑马必须远离狮子）由此可知狮子会吃掉斑马，故选A

点评 做阅读理解时，要注意培养自己快速阅读的习惯．切不可在个别难懂的词句上磨蹭，只要全篇理解了，个别难懂的词句可以根据上下文和构词法去猜测，去推断．