【题目】________ China is a developing country, it also has the world’s largest number of foreign exchange reserves.
A. When B. While C. As D. Because
在线课程【答案】B
【解析】
试题分析：考查连词辨析。A. When当……时候；B. While虽然，然而；C. As因为；D. Because 因为。句意：尽管中国是发展中国家，但有世界上最大的外汇储备。根据句意可知选B项。