I received his mother’s telephone call at eleven．    that he was badly hurt in an accident yesterday．   

A．Then did I know

B．Only then I knew

C．Only then did I know

D．Only then knew I

洋务运动时期，封建统治阶级的成员包括（）

A.张之洞

B.奕

C.曾国藩

D.李鸿章

E.左宗棠