单选题 There was little to suggest Popper' s future eminence until he came within the ______of the Vienna Circle, the renowned group of philosopher-scientists whose ______was to replace traditional metaphysics with the clean worldview of modern science.

• (A) ken… wisdom
• (B) ambit … mission
• (C) control… caprice
• (D) sphere… downfall
• (E) sights… ancestry