【题目】阅读下列短文，根据短文内容填空。在未给提示词的空白处仅填写1个适当的词，在给出提示词的空白处用括号内所给词的正确形式填空。
The oceans are a valuable source of natural resources. Some of them are 【1】 (complete) new to us. Most notable of these is China’s discovery of an ice-like substance, 【2】 (know) as “fire ice”, under the South China Sea. In addition, China’s underwater vessels, such as the Jiaolong and ShenhaiYongshi, have been exploring waters at depths of thousands of metres. The Jiaolong even holds the record for the deepest dive by a manned submarine, at 7,062 metres, 【3】 (give) China its place alongside the world’s top ocean explorers. The research conducted by these vessels is providing scientists with a better understanding of 【4】 the sea bed was formed, as well as helping identify areas for deep-sea drilling, taking deep-sea exploration into a whole new era.
在线课程【答案】
【1】completely
【2】known
【3】giving
【4】how
【解析】
本文是一篇说明文。文章介绍了中国对深海探索的情况及意义。
【1】
考查副词。句意：有些对我们来说是全新的。此处修饰形容词new，应使用副词。故填completely。
【2】
考查非谓语动词。句意：其中最值得注意的是，中国在中国南海海底发现了一种被称为“火冰”的类冰物质。know与an ice-like substance是逻辑动宾关系，应使用过去分词作定语，表被动。故填known。
【3】
考查非谓语动词。句意：蛟龙号还保持着载人潜艇下潜最深的记录，下潜深度为7062米，使中国在世界顶级海洋探险家之列占有一席之地。give与The Jiaolong是逻辑主谓关系，且表示一种自然的结果，应使用现在分词。故填giving。
【4】
考查宾语从句。句意：这些船进行的研究为科学家提供了更好的了解海床是如何形成的，并有助于确定深海钻探区域，将深海勘探带入一个全新的时代。此处是宾语从句，连接词在从句中做方式状语，应使用how引导。故填how。