After our computer network （） for the third time that day, we all went home．

单项选择题Now, don't tell anyone else what I've just told you. Remember, it's （）.

A.controversial
B.secretive
C.confidential
D.sacred

单项选择题The custom is ______ in the belief that a new pregnancy—through its detrimental effect on breastfeeding—would endanger the mother's health.