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() is a slogan put forward by Mao Zedong in 1950s to promote the prosperity of culture and science.
() is a slogan put forward by Mao Zedong in 1950s to promote the prosperity of culture and science.

A. the four modernizations

B. Let a hundred flowers blossom and a hundred schools of thought contend

C. Two whatevers

D. Opposing revisionism

Correct answer: b