This passage is______

A．a brief introduction of a book

B．a customer review of a book

C．an example of self-motivation

D．an advertisement for self-motivation

The underlined expression "a-ha moment" means a moment when___．

A．new ideas suddenly appear

B．you relax yourself by reading

C．you feel tired and sleepy

D．you share your knowledge

The passage most probably appears___．

A．in a newspaper	B．in a magazine
C．on the Internet	D．in a report