The science of puter, rapid progress has been made, is the most important of all.
A. to which
B. from which
C. in which
D. of which
网友回答
A. to which
B. from which
(答案→)C. in which
D. of which
解析：考查定语从句。介词In表示在…方面。Which指代先行词the science of puter,在句中做in的宾语。