填空题Some car factories are now experimenting with having many small production lines rather than one large one
填空题Thus while freedom of choice may be important, there is usually very little that can be done to create it
填空题fixed
单项选择题A.The paper must be turned in on time.B.The question wasn’t very clear.C.He should ask a different person.D.His request was made too late.
填空题machinery