【判断题】The precedence relationships between all pairs of symbols. The following rules are used: L ± R: if there exists a production U →α LR β LR: if there exists a production U→αVWβ , and V LAST+ L and W FIR...
【简答题】阅读理解。 Amada has a new house. On the first floor there is a kitchen, a living room and a dining room. On the second floor there are two bedrooms, a study and a bathroom. There is a sofa, a tea table an...