单项选择题
A．how much B．how fast C．how often D．how long
A．It will soon be destroyed by modern politicians. B．It will remain as strong as it is today and never be changed. C．It will gradually disappear as the society develops. D．It will speed up further division of tribes.
A．Sergeants maintain security in his own tribe. B．Politicians choose men from his own tribe as intimate advisers. C．Military leaders promote fellow tribesmen to higher positions. D．Managers give jobs to fellow tribesmen.