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

单项选择题FDA can ask for the proof of safety and effectiveness of a product（）.

A．if it is a drug
B．if it is a device
C．if its consumers make complaints
D．if its distributors challenge FDA’ s authority

单项选择题Which of the following is true according to the text（）

A．The court is in charge of removing dangerous product.
B．New products are more likely to be questionable.
C．The production of a device must be approved by FDA.
D．The promoters usually just care about profits.

单项选择题It can be inferred that ads mentioned in the text are（）.

A．objective
B．costly
C．unreliable
D．illegal