第一节：（共15小题，每小题2分，满分30分）
阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。
A
All around us buildings shook. We decided to leave the town. We stopped once we had left the buildings behind us. The carts(马车) were moving on opposite directions, though the ground was perfectly flat, and they wouldn't stay in place even with their wheels blocked by stones.
