According to the passage, which of the following c...

C

- Hướng dẫn giải

Phương pháp giải:

Giải chi tiết:

Đáp án là C. Ý trong bài: Since the introduction of air-conditioning and cheaper air travel, however, families have stopped coming to the Catskills in such large numbers, choosing instead more distant locations at different times of the year.