--- Can I go out and play football with my friends, mum?

--- Sorry, my dear. I am afraid you have to stay at home if your bedroom ________.

A．isn't cleaned up

B．is cleaned up

C．will be cleaned up

D．cleans up

女，28岁，偶尔于疼痛、恐惧时出现头晕、恶心、面色苍白等，几分钟后突然意识丧失，常伴血压下降，持续1分钟左右可自然苏醒，最可能的诊断为（）。

A.血管抑制性晕厥

B.颈动脉窦综合征

C.心源性晕厥

D.脑源性晕厥

E.换气过度综合征