Foreign Ministry spokesman Hong Lei on Friday again urged Japan to make serious efforts for the improvement of the relationship between the two countries and honestly face up to and____ its history of militarist aggression.

A．look on

B． concentrate on

C．reflect on

D．hold on

关于舒张晚期奔马律的听诊特点，正确的是

A．音调较高

B．强度较强

C．出现在舒张期开始前

D．距S₂较近，距S₁远

E．心尖内侧听诊最清楚