2. 外语
  3. The science of meteorology is concerned with the study of the structure, state, and behavior of the atmosphere. The subject may

The science of meteorology is concerned with the study of the structure, state, and behavior of the atmosphere. The subject may

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问题    The science of meteorology is concerned with the study of the structure, state, and behavior of the atmosphere. The subject may be approached from several directions, but the scene cannot be fully approached from any one vantage point(有利的地位). Different views must be integrated to give perspective to the whole picture.
   One may consider the condition of the atmosphere at a given moment and attempt to pre- diet changes from that condition over a period of a few hours to a few days ahead. This approach is covered by the branch of the science called synoptic meteorology(天气学).
   Synoptic meteorology is the scientific basis of the technique of weather forecasting by means of the preparation and analysis of weather maps and aerological diagram(高空气象图). The practical importance of the numerous applications of weather forecasting cannot be overestimated. In serving the needs of shipping, aviation, agriculture, industry, and many other interests and fields of human activity with accurate weather warnings and professional forecast ad- vice, great benefits are obtained in the form of the saving of human life and property and in economic advantages of various kinds. One important purpose of the science of meteorology is constantly to strive, through advanced study and research, to increase our knowledge of the atmosphere with the aim of improving the accuracy of weather forecasts.
   The tools needed to advance our knowledge in this way are the disciplines of mathematics and physics applied to solve meteorological problems. The use of these tools forms that branch of the science called dynamic meteorology.
In the last sentence of the passage, the phrase "these tools" refers to ______.
选项 A、weather forecasts
B、economic advantages
C、mathematics and physics
D、meteorological problems
答案C
解析 该题为细节题。最后一段最后一句中 tools 是承接其前一句中的 tools 而来的，两者指代对象相同，而前一句中明确表明 tools 指代 mathematics 和 physics 这两门学科。
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