提出教学过程最优化理论的教育家是( )。

单项选择题The author intends to（）.

A．make consumers aware of the promoters’false promises
B．show the weakness of the law on product safety
C．give advice on how to keep young and beautiful
D．introduce the organization of FDA

单项选择题The Relaxacisor is mentioned as（）.

A．a product which was designed to produce electricity
B．a product whose distributor was involved in a legal case
C．a successful advertisement of a beauty product
D．an example of a quality beauty product