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Verbal·Expression of Ideas·Transitions
easy
Engineers often look to biological adaptations in the natural world to resolve complex aerodynamic challenges.        when Japanese rail designers redesigned the high-speed Shinkansen 500-Series train to eliminate loud atmospheric sonic booms when exiting tunnels, they modeled the locomotive’s elongated nose cone directly after the beak of the kingfisher.
Which choice completes the text with the most logical transition?
A
Specifically,
B
Rather,
C
Meanwhile,
D
In comparison,