小测验：选择正确的单词

1. The flap of the envelope has come unstuck.
   信封口的黏胶黏不住了。
2. She was in a bit of flap.
   她有点慌乱。
3. I'm really in a flap.
   我真的很慌乱。
4. Some doves were flapping their wings over the square.
   有几只鸽子在广场上空振翅飞翔。
5. Taylor flapped the document down angrily.
   泰勒气得把文件一扔。

　1个名词解释