押韵
参考答案：每一首格律诗的偶数句句末位置的字都应属于《诗韵》中同一韵的字，读起来就感觉韵律和谐，这就叫做押韵。
Twenty years ago, his father was very rich and was________a farm. [ ]
A. in place of
B. in charge of
C. in sight of
D. in possession of
你能背诵调压装置运行与维护的口诀吗？
