When __________ to danger and conflict, men tend to increase blood pressure, __________ nervous or anxious .
A:exposed; felt
B:exposed; feeling
C:exposing; felt
D:exposing; feeling
处于青春期的我们需要遵循的基本准则是( )
教室内老师讲课的声音,是由老师的 ____振动产生的,并通过 ____传播到学生的耳朵.