题目选项分析

Evidence suggests that the people who crossed the Bering Strait from Asia into North America over a land bridge were hunter-gatherers,

nomads living in an egalitarian society that obtained its sustenance almost entirely from

Evidence suggests that the people who crossed the Bering Strait from Asia into North America over a land bridge were hunter-gatherers,

which means that their society is egalitarian and obtains its sustenance almost entirely from