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答案。
A
Notice: Spring Festival fire safety
The Spring Festival is coming. Fires are easy to happen, so we must pay attention to fire safety. Fires usually start at night and they often break out in homes, corridors（走廊）or kitchens.
Common reasons:
▶ Set off fireworks too close to buildings or near dry grass.
▶ Forget to turn off kitchen stoves after cooking.
▶ Leave too many things in the corridors.
Fire escape steps:
✓ Cover the mouth and nose with a wet towel.
✓ Stay low to the ground.（Smoke rises high!）
✓ Use stairs to get out of the building—NEVER the lift!

（）1. According to the notice, when do fires usually start?
A. In the morning.
B. At noon.
C. At night.
D. In the afternoon.
（）2. Why should we stay low to the ground?
A. To get out faster.
B. To stay away from the smoke.
C. To make the body cooler.
D. To see the outside better.
（）3. What should we use to get out of the building when there is a fire?
A. The stairs.
B. The windows.
C. The lift.
D. The kitchen.

1. C 2. B 3. A

1. 细节理解题，根据原文第一段内容“Fires usually start at night”可知，火灾通常在夜间发生，对应选项C。
2. 细节理解题，根据火灾逃生步骤里的“Stay low to the ground. (Smoke rises high!)”可知，烟雾会向高处上升，压低身体是为了避开烟雾，对应选项B。
3. 细节理解题，根据最后一条火灾逃生步骤“Use stairs to get out of the building—NEVER the lift!”可知，发生火灾时我们应该走楼梯离开建筑，对应选项A。