---The president by his doctor today that his cancer has e back.
A. informs
B. has informed
C. has been informed
D. is being informed
网友回答
A. informs
B. has informed
(答案→)C. has been informed
D. is being informed
解析：考查时态。句意：总统今天被通知他的癌症又复发了。句意说明总统和通知之间构成被动关系，同时也表示已经被通知了故使用现在完成时的被动形式。故C正确。