---- John, you look worried. Anything wrong?

---- Well, I _______ a test and I’m waiting for the result.

A．will take

B．took

C．had taken

D．take

关于汉坦病毒，不正确的是

A．经呼吸道和消化道传播

B．主要传染源为黑线姬鼠

C．主要症状为高热、出血和肾脏损伤

D．病后免疫力短暂

E．可使用灭活疫苗进行预防