白鱀豚，俗称中国河豚或水下熊猫，主要生活在中国长江中下游，出生时体长80-90厘米，体重3—5千克，寿命可达30年，以淡水鱼类为食，游速可达60千米1小时，喜欢群居，但惧怕人类。2007年，科学家们正式宣告白鱀豚已灭绝。请将下文补充完整，每空一词。
The baiji is a kind of river dolphin.People also call it "Chinese river dolphin"or "underwater （1）pandapanda".It only lives in the middle and lower part of the Yangtze River in China.A baiji does not have many babies，only one every two years.（2）AtAtbirth，a baby baiji is about 80 to 90 cm （3）longlong，and weighs 3 to 5 kilos.A healthy baiji can （4）livelive up to 30 years.Baiji's food is mainly small fish，and it can eat about 10 kilos of fish a day.Baijis can swim as fast as 60 kilometers an hour.They like to live in groups， （5）butbut they are afraid of people.In 2007，scientists declared the baiji had died out.
【答案】panda；At；long；live；but
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声明：本试题解析著作权属菁优网所有，未经书面同意，不得复制发布。
发布：2024/7/13 8:0:9组卷：1引用：1难度：0.5
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