单选题 The cultures early of the genus Homo were generally distinguished by regular use of stone tools and by a hunting and gathering economy.

【正确答案】 A

【答案解析】答案：A 分析：词的顺序错误，应改为形容词+名词. 改正：cultures early à early cultures 翻译参考：人类的早期文化是以普遍使用石头工具和打猎聚居的经济为其特征。