选D,这是一个强调句,It is ...that ....“in the ability to think and the way to solve things” 是被强调的部分.所以第一个空要填"that".differ 是动词,而different是形容词.它们的搭配应该是"A differ from B”," A is different from B".将原句改换成陈述句就应该是这样：He differs from you in the ability to think and the way to solve things.