Not knowing how to grow crops,the primitive people had no but to gather the fruit and hunt animals for food.
A. conception
B. mand
C. virtue
D. alternative
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A. conception
B. mand
C. virtue
(答案→)D. alternative
解析: 句意:由于不知道如何种庄稼,原始人别无选择,只好收集水果及捕猎动物来充当食物。alternative“可能的选择 ” , have no alternative but...“ 除 …… 外 别 无 选择”,符合题意。其他选项是:A. conception概念,设想,构想,B. mand“命令,指令”;C. virtue美德,德行,价值,长处 正确答案 D