SAT OG上一道IS题
问题描述：
SAT OG上一道IS题
Flints found in the region extending from the Nile Valley to the high lands of eastern Irap attests to the presence of people there as long ago as one hundred thousand years.中 attests to 为什么错了?
答
他在这里不能 算作谓语,若要连成句子,个人认为应该改成‘which attested to',“证实了一万年前人的聪明才智.”