—What time will Mr Brown be back to China?

—Sorry. I don’t know ______.

A．when did he go abroad

B．why he is going abroad

C．how soon will he be back

D．how long he is going to be there

一个患者意识清晰，智能相对良好，但出现近事记忆障碍和在交谈中有虚构倾向，最可能的综合征是

A．谵妄综合征
B．慢性脑病综合征
C．急性脑病综合征
D．痴呆综合征
E．遗忘综合征