A、2
B、3
C、4
D、5

A．All Mozart music can help children improve their intelligence score.
B．Mozart's music has its own unique magic while other musicians do not have.
C．The effect can last more than 15 minutes after listening to the music.
D．It only works for the certain tests that focus on visual spatial reasoning

A．C_j-1^i-1 (1-e^(-λt))^(j-i)
B．C_j-1^i-1 (e^(-λt))^i
C．C_j-1^i-1 (e^(-λt))^i (1-e^(-λt))^(j-i)
D．(e^(-λt))^i (1-e^(-λt))^(j-i)