Which is the proper explanation of the word "fade'(L. 2, para. 3 )
A) Disappear. C) Demonstrate.
B) Decrease. D) Declare.

A．the gradual process of forgetting is an indication of an individual's adaptability
B．if a person gets very forgetful of a sudden he must be very adaptive
C．forgetting for lack of practice tends to be obviously in adaptive
D．sudden forgetting may bring about adaptive consequences

A．find out what role careful nursing would play in teaching child to speak
B．discover what language a child would speak without hearing any human speech
C．prove that children are born with the ability to speak
D．prove that a child be damaged without learning a language