The world considers Japan to be the best prepared to deal with an earthquake emergency. _______, the March 11 earthquake, followed by a strong tsunami minutes later, still left thousands of people dead.

A．Even though

B．As though

C．Even so

D．If so

麻疹与结核的关系是()

A．原有结核病灶可恶化

B．可初染结核病

C．结核菌素试验可暂时阴转

D．结核病可隐伏

E．原有结核病灶自愈