C
题意:关于莱特兄弟,作者说了些什么?
A.他们总是听取机械师的建议。
B.他们对报纸业务知之甚少。
C.他们经常持有相反的观点。
D.他们的关系很糟糕。
A、B文中未提及,故排除;
C.由第一段3-5行They even said they "thought together". However, when the Wright brothers said they thought together, what they really meant is that they argued together. "After long arguments, we often found ourselves in the position of each having been pulled to the other's side," (他们甚至说他们"一起思考"。然而,当莱特兄弟说他们一起思考时,他们真正的意思是他们一起争论。“在长时间的争论之后,我们经常发现自己处于一种彼此都被拉到对方一边的境地,”)可推测莱特兄弟经常持有相反的观点,他们通过争论学会以对方的角度思考。C正确;
D.根据第一段倒数第二行I don't think they really got mad(我不认为他们真的生气了)可知莱特兄弟的关系并不糟糕,D错误。
故选C项。