【正文】 ated the they hadn39。 壽命：雄性： 50～ 60 年；雌性： 80～ 90 年，甚至 100 年 雌雄虎鯨外觀區(qū)別 (上雄下雌 ) 虎鯨的體型極為粗壯，是海豚科中體型最大的物種。在背鰭后方有呈灰至白色的馬鞍狀斑紋。群體成員間的胸鰭經(jīng)常保持接觸，顯得親熱和團結(jié)?；ⅥL也會偷吃延繩釣漁船上鉤的魚獲，或吃食漁民丟棄的下雜魚等。各群似乎有 自己偏好的食物種類，例如某些族群主要以鮭魚、鮪魚、或鯡魚等魚類為主要食物，某些群則會巡視鰭腳類的登陸地尋找獵物，或跟隨遷徙中的鯨群，有如狼群追蹤北美馴鹿的情景。在北極與南極海域，因為風(fēng)吹而快速產(chǎn)生的浮冰對虎鯨而言是一大麻煩，有時會因此迫使它們停留于水面開闊的小水域里相當長的時間。 虎鯨的體色圖樣主要由黑與白這兩種對比分明的色彩組成，位于身體腹面的白色區(qū)域自下顎往后延伸至肛門處，在全黑的胸鰭之間變得狹窄，到了肚臍后方產(chǎn)生分歧，尾鰭腹面亦為白色。 popularity， there are concerns that intensive whale watching operations may drive whales from their preferred well， noise－ making devices attached to salmon cages to scare off predators may also force whales out of their preferred habitat， affecting their ability to orca populations are also hunted in Japan，Indonesia， Greenland and the West Indies. 外形特征 虎鯨是一種大型齒鯨，身長為 8～ 10 米，體重 9 噸左右，背呈黑色，腹為灰白色，有一個尖尖的背鰭，背鰭彎曲長達 1 米，嘴巴細長，牙齒鋒利，性情兇猛，食肉動物，善于進攻獵物，是企鵝、海豹等動物的天敵。s blow－ hole to stop it those others stopped it fleeing out to last， we succeeded in catching the meantime， we enjoyed the lips and tongue of the baleen whale， leaving the rest of it to the whalers the next day. One day， James was washed off the sea was waves were carrying him further and further still， I saw a shark swimming James39。Being badly wounded， the whale soon died. boat and the whale， just like a pack of excited dogs. Within a moment or two， the whale39。Anecdotes Time t know their names， are the most peacock is the smallest and isn39。Some features of it， its distribution， or living about it is wele. s vivid description， the teacher can ask them to do a blank－ filling exercise in pairs to find out some key verbs and verb done this，students must have had a very clear understanding of the whole hunting and saving make their understanding easier， the teacher should deal with any language problems while they are then underline some useful words and expressions. For further thinking， students are expected to work in pairs or will discuss the problems and work out the answers cooperatively， choosing a reporter in their will think actively， so various answers are possible. To consolidate the contents of the reading passage， students should be required to retell the passage in the name of Old Tom or the baleen whale or James with as many key words as possible. At the end of the class， by holding a debate， the teacher can arouse students39。 great interest in sea animals. 2． Make them aware of the relationship between man and animals and the importance of banning whaling. 3． Develop students39。 intelligence： one is that of all animals， chimps are the most intellectual and capable； another is that chimps are no more capable of studying than dolphins， and it is probable that dolphins are more intellectual than ， some people consider dolphins as “wizards in the sea”． When mentioning dolphins， people will probably speak highly of their supernormal intelligence and that aquarium， it is mon that dolphins are giving a wonderful performance by following the trainer39。t expect the small peacocks to turn shouldn39。The killer whales helped the whalers catch a baleen whale. Step 3 Skimming 1． Glance through the two anecdotes and use one sentence to get the main idea of each anecdote. Main ideas： Anecdote one： The killer whales helped the whalers to catch a baleen whale. Anecdote two： Old Tom saved a whaler James. 2． Fill in the blanks with the names of the roles in the text. (1)______was 16 years of age when he went to work at the whaling station. (2)______orderd Clancy to go to the boat as there was a whale out there in the bay. (3)______was swimming by the boat showing the whalers the way. (4)______told Clancy that they would return the next day to bring in the body of the whale. (5)______was carried by the waves further and further away from the whalers. (6)______knew that Old Tom would protect James. Suggested answers： (1)Clancy (2)Gee (3)Old Tom (4)Jack (5)James (6)Red Step 4 Scanning 1． Read these two anecdotes carefully and find out some verbs or verb phrases to do the blank－ filling worksheet. Anecdote one： There was perfect cooperation between the whalers and the killer whales. Before the hunt The killers39。t_let_the shark near. (2)Old Tom firmly held James up in the water. 2． Reading aloud and