试题来源：公共英语四级-121
【单选题】 The growth of specialization in the 19th century might be more clearly seen in sciences such as______.
A．sociology and chemistry
B．physics and psychology
C．sociology and psychology
D．physics and chemistry
参考答案：D
网考网解析：
从文章的第一段可以得出[D]正确。
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