A.it's own effort
B.ideas adopted from the west
C.diffusion of knowledge
D.exploiting mineral resources
A.without mistakes
B.not to be misunderstood
C.correct
D.sound
A.slightly skeptical
B.optimistic but with certain cautiousness
C.overly enthusiastic
D.generallyneutral
A.Knowledge and World Economy
B.Diffusion of Science
C.The Earth's Learning Curve
D.Knowledge and Wisdom