【简答题】用适当的情态动词完成下列对话 1. A: ______I finish my homework now? B: No,you____.You____do it tomorrow. 2. A: This bag is very old. ____you still use it? B: Yes,I can. 3. A: _____I go out and play football,mum? B: ...
【简答题】用方框中所给动词的适当形式完成下列句子 1. I _____ my teeth three times yesterday. 2. When I was a child, I _____ to be a doctor. 3. We _____ our vacation last year. We stayed at a very nice hotel. 4. Amy's grandfather _...
【简答题】按要求,变一变,写一写。 1. laugh(过去式) 3. wear(过去式) 5. women(单数) 7. children(单数) 2. went(动词原形) 4. man(复数) 6. tell(过去式) 8. ate(动词原形)
【判断题】渐开线直齿圆柱齿轮传动的重合度是实际啮合线段与齿距的比值。()
【多选题】若想尽早完成任务.可采用的手段有( )。
【单选题】如果一个文法是递归的,其产生的语言的句子( )。
【判断题】如果一个文法是递归的,则其产生的语言的句子是无穷个。