单选题：根据以上选项，回答题Scientists ignored Lake Vida because they thought

题目内容：

根据以上选项，回答题
Scientists ignored Lake Vida because they thought that a lake of ice__________.

参考答案：

答案解析：

The underlined word "significant" in paragraph 3 most probab

The underlined word "significant" in paragraph 3 most probably means __________．

分类：卫生类题型：单选题

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The voyage is a recurrent metaphor in Romantic literature.A．A lover B．B journey

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下列属于RAM的特点的是（　　）。A．只读不写 B．可读可写 C．关机后信息丢失　　　考试大_在线考试中心 D．关机后信息不丢失

分类：卫生类题型：单选题