Which is true about scientific theories? A. Scientific theories can never be proven wrong
B. Scientific theories are always unreliable
C. Scientific research theories prevent new questions from being asked
D. Scientific theories can be rejected by new reliable evidence

Under the soviet system, the government a. controlled all forms of communication. b. allowed newspapers to print whatever they wanted. c. controlled editorials but not the reporting of news. d. encouraged access to a wide variety of news sources. select the best answer from the choices provided a b c d