请教两道SAT语法真题!高手请进!谢谢!第一道是改文章里面的改句子,我觉得B和E都可以(其它明显错误选项我就不列了),为什么答案是E?B有什么错?文章(只和第一段有关,我就只打了第一段,可能有

请教两道SAT语法真题!高手请进!谢谢!第一道是改文章里面的改句子,我觉得B和E都可以(其它明显错误选项我就不列了),为什么答案是E?B有什么错?文章(只和第一段有关,我就只打了第一段,可能有
请教两道SAT语法真题!高手请进!谢谢!
第一道是改文章里面的改句子,我觉得B和E都可以(其它明显错误选项我就不列了),为什么答案是E?B有什么错?
文章(只和第一段有关,我就只打了第一段,可能有些拼写错误,请54)：
A castle is not the same thing as a palace, though some people use the terms"castle"and"palace"interchangeably.Castles are fortified dwellings,built by feudal lords of the Middle Ages.Their stone walls,moats iron gates, and drawbridges were designed to ward off marauding plunderers and hostile armies. Small windows in castle walls allowed archers to shoot at intruders from positions of comparative safety. But even welcomed guests would have found castles less than inviting. In royal palaces there were to be found many comforts that medieval castles did not offer. These had dark dungeons and damp, drafty living quarters instead.
题目：In context, which of the following is the best way to combine sentences 6 and 7(reproduced bellow)?
In royal palaces there were to be found many comforts that medieval castles did not offer. These had dark dungeons and damp, drafty living quarters instead.
B.Lacking many comforts compared to royal palaces, medieval castles instead offered dark dungeons and damp, drafty living quarters.
E.With their dark dungeons and damp, drafty living quarters, medieval castles offered few of the comforts to be found in royal palaces.
第二道是改句子,答案是D...我就不明白为什么一定要加个occurring呢?
The shift from traditional to cosmetic dentistry （is because adults are getting fewer cavities and becoming）more vain.
A.原句
D.is occurring because adults are getting fewer cavities and becoming
括号就是画线部分...在线等~感激不尽!

请教两道SAT语法真题!高手请进!谢谢!第一道是改文章里面的改句子,我觉得B和E都可以(其它明显错误选项我就不列了),为什么答案是E?B有什么错?文章(只和第一段有关,我就只打了第一段,可能有
选项b中将比较对象改变了.比较对象不是royal palace而是……to be found in royal palace.换句话说就是比较两种建筑里面的东东……
IS题中 因为后面的是ing现在进行,所以之前的也应该是.如果选a楼主自己读下~就会发现,the shift from…是表示已经完成,已经shift了的意思.而之后又说ing很矛盾.所以,应该是shift is occuring because xxx is Ving
祝楼主SAT 2400哈!加油~