It’s the love and responsibility that have driven him to ___ many hardships and survive.

A．go into

B．go through

C．look through

D．look into

急性链球菌感染后肾小球肾炎的前驱感染病源为（）

A.A组β溶血性链球菌

B.绿色链球菌

C.肺炎球菌

D.金黄色葡萄球菌

E.流感杆菌