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．遷徙
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（推斷）thatA．
A．lions may cat zebras
B．lions travel in groups
C．lions try to avoid zebras．

Answer 1

分析 本文主要講述了動物們的遷徙的一些常識．他們遷徙或為舒適的溫度，或為食物和水源．文章重點介紹了遷徙過程中動物們面臨的三種挑戰(zhàn)：距離、足夠的食物和水源、安全．

解答 21．C 細節(jié)理解題 根據(jù)第一段中提到的At first，these animals seem completely different．和They all migrate．
可知第一段主要介紹的是不同種類的動物有一個共同的特點"遷徙"，故選C
22．B 詞義猜測題 根據(jù)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）．"有些遷徙團體搬到一個溫度更適宜居住的地方，有些是為了尋找水源和食物．遷徙團體作為一個整體而出行，設(shè)法生存"可知migrate的意思是"遷徙"，故選B
23．B 細節(jié)理解題 One challenge is distance（一個挑戰(zhàn)是距離）．Another chanllenge is finding enough food and water during the journey．（另一個挑戰(zhàn)是在旅途中找到足夠的食物和水） 和In addition，migrating animals have to avoid other animals that want to eat them（除此之外，遷徙動物必須避開想吃掉它們的動物），由此可知這篇文章介紹了遷徙動物旅途中遇到的三大挑戰(zhàn)．故選B
24．A 細節(jié)理解題 根據(jù)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．（一只大白鯊從澳大利亞游到南非然后返回，九個月的時間里，游大約兩萬公里，可知從澳大利亞到南非大約一萬公里），選項A的意思是"從南非到澳大利亞大約兩萬公里"這種說法是錯誤的，根據(jù)原文中的each Mali elephant needs over 200 liters of water each day．可知選項B正確；根據(jù)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．可知選項C正確；故選A
25．A 推理判斷題 根據(jù)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，遷徙動物必須避開想吃掉它們的動物，例如，斑馬必須遠離獅子）由此可知獅子會吃掉斑馬，故選A

點評 做閱讀理解時，要注意培養(yǎng)自己快速閱讀的習慣．切不可在個別難懂的詞句上磨蹭，只要全篇理解了，個別難懂的詞句可以根據(jù)上下文和構(gòu)詞法去猜測，去推斷．