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  3. It has not been determined how years sea turtles can live in their natural environment, but they will reach a very old age if le

It has not been determined how years sea turtles can live in their natural environment, but they will reach a very old age if le

admin2013-11-06  39
问题 It has not been determined how years sea turtles can live in their natural environment, but they will reach a very old age if left undisturbed by humans.
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答案how∧一many
解析 译文：还不确定海龟能在自然的环境中存活多少年，但如果不受人类干扰的话，它们可以活很久。
分析：考查引导词。how是副词，后面不能直接加名词，应改为how many years。
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