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中国第一台蒸汽机的创造者是 【 】
①李善兰 ②徐寿 ③华蘅芳 ④詹天佑
A．①②
B．②③
C．③④
D．①④

A.①②
B.②③
C.③④
D.①④

【参考答案】

B
【解析】①是数学家，著作是《方圆阐幽》，②是铁路工程师，修筑了中国第一条自己设计的铁路——京张铁路．
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