There were __________ animals in the forest many years agoA.thousand ofB.thousands ofC.three thousand ofD.three thousands of
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B解析此题考查名词的量。确切数量常用数词+hundred/thousand/million/billion +名词的复数形式；不确切数量常用hundreds/thousands/millions/billions + of+名词的复数形式.根据语境可知选择