C) knew that they were ignorant and wanted to know more about nature
D) did more harm than good in promoting man's understanding of nature
3. Which of the following statements is NOT true of scientists in earlier times?
A) They invented false theories to explain things they didn't understand.
B) They falsely claimed to know all about nature.
C) They did not believe in results from scientific observation.
D) They paid little attention to the problems they didn't understand.
4. What is the author's attitude towards science?
A) He is depressed because of the ignorance of scientists.
B) He is doubtful because of the enormous difficulties confronting it.
C) He is confident though he is aware of the enormous difficulties confronting it.
D) He is delighted because of the illuminating scientific findings.
5. The author believes that ______ .
A) man can find solutions to whatever questions concerning nature he can think up
B) man can not solve all the problems he can think up because of the limits of human intellect
C) sooner or later man can think up all the questions concerning nature and answer them
D) questions concerning consciousness are outside the scope of scientific research