He told me his computer company was in great need of a capable leader, ______ with strong will as well as good humor.

A．who

B．that

C．one

D．which

除了瑞士籍数学家欧拉外，在18世纪推进微积分及其应用的欧陆数学家中，首先应该提到（）学派，其代表人物有克莱洛、达郎贝尔、拉格朗日、蒙日、拉普拉斯等。