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20．Dolphins are interesting animals and researchers find them interesting to watch．They don't have hands，but can use tools to solve problems，just like us．Scientists have observed a dolphin trying to get a shy eel（鳝鱼） to come out of its hole by poking（捅）it with a dead fish．Many species of dolphin live in large societies．They have many different relationships and need a good communication system； they use a variety of sounds to communicate with each other．
There is currently no evidence that dolphins have a language of their own．But scientists still have a lot to find out about these animals and so there are certain to be a few surprises in the future．
At Kewalo Basin Marine Laboratory in Hawaii，the dolphin team have developed a sign language to communicate with the dolphins，and the results are amazing．Not only do the dolphins understand the meaning of individual words，they also understand the significance of word order in a sentence．For example，when they were asked to‘touch the ball with your tail and then jump over it'they generally responded correctly and straight away，which showed that they understood the language．
Most mammals seem to enjoy play-but dolphins seems to like making their games as challenging as possible．On a beautiful day in 1997，researchers working at a beach，off the southern coast of Brazil，observed a little dog going into the sea and swimming towards the dolphins．To their surprise，the dolphins approached the dog and then started throwing it into the air．The dog seemed to enjoy the‘game'and continued playing with the dolphins for more than an hour．From then on，different dogs were seem trying to interact with the dolphins．
Dolphins live in a very different world from ours，but they are very good at our‘intelligence tests'．For example，they will jump out of the water when they hear a whistle noise．They do this because they will get a fish as a reward．There is still much to learn about these flexible（灵活的）problem-solvers，but from the evidence so far，it would seem as though dolphins are very intelligent．
56．To get a shy eel to come out of its hole，a dolphin would poke it withC．
A．a tool
B．its tail
C．a dead fish
D．its mouth
57．At a laboratory in Hawaii，the dolphin team have developed aB to communicate with the dolphins．
A．variety of sounds
B．sign language
C．special word order
D．dolphin's language
58．Dolphins not only understand the meaning of individual words，they also understand the importance ofD in a sentence．
A．the subject
B．the verbs
C．the main structure
D．word order
59．When they play，dolphins seems to like making their games asA as possible．
A．difficult
B．easy
C．interesting
D．relaxing
60．Dolphins will jump out of the water when they hear a whistle noise in order toD．
A．watch people
B．breathe fresh air
C．enjoy themselves
D．get some food． 试题答案
分析 本文属于广告类阅读，作者通过这篇文章向我们介绍了研究人员对海豚的研究，海豚生活在一个与我们完全不同的世界，它们也可以用工具解决问题．
解答 56．答案C．细节理解题．结合第一段Scientists have observed a dolphin trying to get a shy eel（鳝鱼） to come out of its hole bypoking（捅）it with adead fish可知为了让一只害羞的鳗鱼从洞里出来，海豚会用一个死了的鱼来引诱它们，故选C．
57．答案B．细节理解题．结合第三段At Kewalo Basin Marine Laboratory in Hawaii，the dolphin team have developed a sign langue to communicate with the dolphins可知在夏威夷的一个实验室里，海豚队已经研制成功手语来与海豚交流，故选B．
58．答案D．细节理解题．结合第三段Not only do the dolphins understand the meaning of individual words，they also understand the significance of word order in a sentence可知海豚不仅了解个别单词的含义，还了解语序的重要性，故选D．
59．答案A．细节理解题．结合第四段Most mammals seem to enjoy play-but dolphins seems to like making their games as challenging as possible可知海豚似乎喜欢使他们的游戏具有挑战性，故选A．
60．答案D．细节理解题．结合最后一段 they will jump out of the water when they hear a whistle noise．They do this because they will get a fish as a reward可知海豚会在听到口哨声时跳出水面，以便能得到吃的，故选D．
点评 考查学生的细节理解和推理判断能力．做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确选择．在做推理判断题时不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．
If you have a job, _____ yourself to it and finally you’ll succeed.
A．do devote B．don’t you devote
C．devoting D．not to devote
