The writer's attitude towards science is ______ .

A．everyone is interested in scientific findings
B．the average man often uses in his own vocabulary what was once technical language not meant for him
C．an educated person would be expected to know most technical terms
D．various professions and occupations often interchange their dialects and jargons

A．the exposure of DNA to the public is unnecessary
B．the tiny cell in DNA is a neat little machine
C．mart knows nothing about DNA
D．man has much to learn about DNA