【单选题】

In the author's opinion ______,
A．if a person has a background of knowledge, he can read superficially over a wide field

B．an adult can build foundations in science no higher than a young man
C．a thorough grounding in the fundamental sciences is absolutely necessary for a person hoping to derive value from superficial reading over a wide field
D．a mass of detailed technical information is indispensable to creative thinking