题目

“哲学是智慧的源泉”是说( ) ①哲学是指导人们生活得更好的艺术 ②哲学是现世的智慧，是“文化的活的灵魂” ③真正的哲学可以指导人们正确地认识世界和改造世界 ④一切智慧都源于对哲学的学习 A．①②③                        B．②③④ C．①③④                        D．①②④   This is the famous factory, ________ we once visited when we were at school． [　　] A． that B． which C． where D． in which