新概念英语第二册67课摘要写作
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Tazieff ,the Polish scientist,went to Lake Kivu in the Congo in 1948 to observe a new volcano which he called Kivuro .After taking photographs ,he has to leave almost at once because a river of liquid rock threatened to surround him.He escaped just in time but he returned two days later when the volcano had become quiet.This time he climbed into the mouth of Kivuro

in order to take photographs and measure temperatures.