a preposterous old woman的用法和样例：
- His expression was truly comical and at that moment I did not know whether he was a preposterous old man pulling my leg or whether he was really a simpleton.
- The old woman fell down a flight of stairs.
- They are asking a preposterous price for the work.
- The old woman gave a loud cackle.
- The old woman have a careworn look on her face..