Six pre-school aged children are talking to the camera about how good the juice tastes, with the voice of an adult （） into the background talking about the nutritional value.

Six pre-school aged children are talking to the camera about how good the juice tastes, with the voice of an adult （） into the background talking about the nutritional value.
A.interactive
B.interspersed
C.interrelated
D.interfered
正确答案：interspersed