A-A+ If the condor population has tripled since two 2022-08-06 11:56:59 问答库 阅读 179 次 问题详情 If the condor population has tripled since two decades ago, about how many are there now? A.90. B.60. C.33. D.300. 参考答案 正确答案:A参见第一段。如果20年前不足30只的话,这个数的三倍应该是900