[单项选择]

Temperature

Three scales of temperature, each of which permits a precise measurement, are in concurrent use: the Fahrenheit, Celsius, and Kelvin scales. These three different temperature scales were each developed by different people and have come to be used in different situations.
The scale that is most widely used by the general public in the United States is the Fahrenheit scale. In 1714, Daniel Gabriel Fahrenheit, a German physicist who was living in Holland and operating an instrument business, developed a mercury-in-glass thermometer and the temperature scale that still carries his name. His original scale had two fixed points: 0° was the lowest temperature that he could achieve in a solution of ice, water, and salt, and 96° was what he believed was the normal temperature of the human body (though this was later determined to be 98.6°). Based on this scale, he calculated that the freezing poin
A. introduce a discussion of the areas of the world where the Celsius scale is used
B. argue for the need for a standard measure of temperature throughout the world
C. provide an example that demonstrates the effectiveness of the Celsius scale
D. relate the widespread use of the Celsius scale to the previously mentioned limited use of the Fahrenheit scale