According to the passage, living science is impossible with, out widespread belief in the existence of

A．Their English are better than native speakers.
B．The contents of the debates are always wonderful.
C．They will have greater achievement in the future.
D．They will become members of British airline companies.

A．A professor from Beijing.
B．An officer of British Airways.
C．A professor in Oxford.
D．A professor from a city near Beijing.