【单选题】

In this section you will hear everything ONCE、ONLY. Listen carefully and then answer the questions that follow. Mark the correct answer to each question on your coloured answer sheet. Mary doesn’t seem to favour the idea of a new airport because

A、the existing airports are to be wasteD、
B、more people will be encouraged to travel.
C、more oil will be consumeD、D、more airplanes will be purchaseD、