单选题
The first two stages in the development of civilized man were probably the invention of weapons and the discovery of fire, although nobody knows exactly when he acquired the use of the ______.
【正确答案】
A
【答案解析】[解析] the latter指(两者中的)后者，如：Of the two the latter is far better than the former. 两者中后者比前者好得多。符合题意。