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

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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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