2. 职称英语
  3. The total quantity of water is not known, and it is about enough to cover the su

The total quantity of water is not known, and it is about enough to cover the su

游客2023-12-01  36
问题 The total quantity of water is not known, and it is about enough to cover the surface of the globe to depth of about two and three-quarter kilometers.
选项
答案 连词误用，应把第一个and改为but。
解析 上文提到“水的总量虽不知道”，下文说“但它足够覆盖地球表面了”，因此上下文之间是转折关系，而不是并列关系。
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