( Based on the growth rates of large modern reptiles such as ) the Galapagos tortoise and examination of fossils of juvenile dinosaurs, scientists estimate that the larger dinosaurs probably lived to be between 100 and 200 years old. A. Based on the growth rates of large modern reptiles such as B. On the basis of growth rates of large modern reptiles such as C. Based on the growth rates of large modern reptiles like D. On the basis of growth rates of large modern reptiles, like those of E. Based on the growth rates as those of large modern reptiles like 答案是B，错选了A。科学家基于爬行动物的生长率，估计了恐龙的存活时间。科学家做based on的逻辑主语有错吗？麻烦老师讲解。 (Based on account of various ancient writers) , scholars have painted a sketchy picture of the activities of an all-female cult that, perhaps as early as the sixth century B.C, worshipped a godness known in Latin as Bona Dea "the good goddess". A. Based on account of various ancient writers B. Basing it on various ancient writer's accounts C. With accounts of various ancient writers used for a basis D. By the accounts of various ancient writers they used E. Using accounts of various ancient writers 答案是E，还是错选了A。做题时在AE纠结了好久，因为不确定学者作为“基于不同作家的解释”的主语是不是错的，而且感觉基于要比使用的表达更好，尽管可以确定using的主语是学者，但还是把E排除了，麻烦老师讲解。 因为不知道这两道题是犯了什么错误，所以去有道查了based on 的例句，发现人是可以做主语的：Based on the finding, one might predict that the bank should increase its display and budget. 以及 Based on that representation, the district judge denied a motion to dismiss the new comlaint. 麻烦老师讲解这几个题的区别。

王文静老师，我这道题目选了E，因为读起来感觉：a third of them作为elephants的修饰语，有一个with比较顺口也比较符合一般修饰语的语法，能麻烦您解释一下吗

问王文静老师，结合未画线部分C答案相当于用and并列了两个That从句修饰robe，且句子结构，动词时态也没有什么错误，代词they也有明确的指代，请问老师是哪里有问题？

老师请问一下，A答案为什么错？estimated 用来修饰fragments，A和D的区别就是介词 at 和 to 的区别 固定搭配？查了例句 estimate at 是正确的使用 被估计在 。。几百万年以前这个语意放在此句里 我感觉是合理的。

请问一下老师，关于这道题，我是根据 either ..or..绝对的平行做对的，但是在and并列的两个谓语 date 和 were fashioned的这个部分有点困惑。为什么不是date and are fashioned 或者说 dated and were fashioned。我认为这里是在讲述一个客观事实：这个神像可以追朔到什么时期和由什么制成，应该是用一般现在时。were fashioed 是过去式的被动语态对吧？date and were fashioned感觉也不复合并列的要求。

问MAY老师，两个“项目”的会用TT图解决，请问MAY老师像这种三个“项目”的题应该怎么解决？

问MAY老师 我用TT图解决不了这个问题，麻烦老师帮我看一下是哪里出了问题。

May老师，这是博智模考题里面的一道数学题，不理解呢

May老师你好，这道题的第三小题我的解题思路是插空法，但是做出来答案不对，请老师找找我的问题。因为题目说两端不能有女生，那我就让3个女生插在男生当中，5个男生6个空位，但要去掉一头一尾两个空位，就是C4选3*A33*A55（剩下5个男生随便排），请问老师我的思路上哪里错了？

麻烦老师帮我看看我哪里做错了

阴影区的这句话，中间的那个gives，是跟着前面哪个词的? 是哪个词发出的gives动作? 谢谢