The new teacher was so well-organized that she began _____ we stopped yesterday so that no point was

left out. [ ]

A. when

B. in which

C. how

D. where

中国加入WTO以来与世界的科技、文化、经济交流更频繁，引进了许多新技术，提高了综合国力丰富了人民生活。在清末民初时，中国也开始逐渐融入世界文明的发展中，接受西方先进的技术，照相技术的引进便是一例，请你说说照相术的在中国的出现和发展，对中国社会产生了哪些影响？

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