2. 职称英语
  3. Water on the earth is being continuously recycled in a process known as the

Water on the earth is being continuously recycled in a process known as the

游客2024-07-25  35
问题     Water on the earth is being continuously recycled in a process known as the hydrologic (水文的) cycle. The first step of the cycle is the evaporation (蒸发) of water in the oceans. Evaporation is the process of water turning into vapor, which then forms cl
选项 A、evaporation
B、water vapor
C、outer space
D、the hydrologic cycle
答案 B
解析 细节题。本题要求回答“云是由什么形成的”，文章的第一段第三句话“Evaporation is the process of water turning into vapor，which then forms clouds in the sky. ”意思是：蒸发是水转化为蒸汽的过程，这个过程使得云在天空中形成。因此，应选择答案“水蒸气”，故选B。
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