2. 外语
  3. Three【C1】______years ago Daniel Gabriel Fahrenheit made his【C2】______thermometer in his home town of Danzig (now Gdansk in Polan

Three【C1】______years ago Daniel Gabriel Fahrenheit made his【C2】______thermometer in his home town of Danzig (now Gdansk in Polan

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问题     Three【C1】______years ago Daniel Gabriel Fahrenheit made his【C2】______thermometer in his home town of Danzig (now Gdansk in Poland) . The thermometer was filled with【C3】______and completely sealed, but it was not much useful without some sort of【C4】______to measure the temperature.
    One story【C5】______that, during the winter of 1708 - 1709, Fahrenheit took a measurement of 0 degrees as the coldest temperature outdoors—which would now read as minus 17. 8°C. Five years【C6】______he used mercury instead of alcohol for his【C7】______, and made a top reference point by measuring his own body temperature as 90 degrees. Soon afterwards he became a glassblower, 【C8】______allowed him to make thinly blown glass tubes that could be marked up with more points on the scale and so【C9】______accuracy.
    Eventually he took the【C10】______point of his temperature scale from a reading made in ice, water and salt, and a top point made from the boiling point of water. The scale was recalibrated using 180 degrees between these【C11】______points and Fahrenheit was able to make much more accurate and more【C12】______measurements of temperature.
    But in 1742 a rival challenged the Fahrenheit scale and【C13】______superseded it. Anders Celsius, in Sweden, invented a scale of 100 degrees between the freezing and boiling points of water and gradually【C14】______over in many countries. However, the British【C15】______wedded to Fahrenheit until well into the 20th century.
【C8】
选项 A、thereby
B、which
C、that
D、what
答案B
解析 空格所在句大意：很快他成为一名玻璃制造商，这样一来，他可以制造出更薄的棕色玻璃管。从语法来判断，此处用一个which指代前面所讲的“成为一名玻璃制造商”这一整件事情，因此本题选B。
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