I forgot to tell you that one of the English teachers I asked is very excellent because I have asked him many SC questions and guess what? He is invincible! If you have wirtnessed someone who can answer GMAT SC for 100% correctly, you probably consider it as "mission impossible". He came from Ireland and teaches English for living. In fact, I have never seen such an outstanding teacher.
这个搭配的确是有的,但是语言并不一定是约定俗成的。有些英语是很口语化的,但是gmat的英语或者其他的英语也好,选择的是正确的句子,即favor over 是对的,但是因为句子里有其他的错误,所以必须选用排除法。而且从整个句子来看,E绝对比D简洁。succinct--clear express yourself in fewer words是商业写作的习惯。这就是为什么我根本不选D的原因。