What a fast learner he was! He_____ a lot of French when he lived with the native.

A．took up

B．made up

C．picked up

D．turned up

流行性出血热最常见的并发症是（）。

A.肺水肿

B.胃肠道大出血

C.颅内出血

D.肺部感染

E.肝损害