6^,W1h-C1j0G China will spend about 52 billion yuan ________ new airports and ________ old ones in the west of.d/@7j:\3B-?.Z6r:_;O6O-{3V1?
China in the 11th Five-Year Plan period （时期）..d/@7j:\3B-?.Z6r:_;O6O-{3V1?
A. repairing; building.d/@7j:\3B-?.Z6r:_;O6O-{3V1?
B. to build; repair.d/@7j:\3B-?.Z6r:_;O6O-{3V1?
C. building; repairing.d/@7j:\3B-?.Z6r:_;O6O-{3V1?
D. to repair; build.d/@7j:\3B-?.Z6r:_;O6O-{3V1?