单项选择题
Passage Two Questions 29 to 31 are based on the passage you have just heard.
A.Provide professional standard care. B.Be frank and seek help from others. C.Be affectionate and cooperative. D. Make use of community facilities.
A.It can never be done with high technology. B.It is the best way to restore damaged eyesight. C.It is a major achievementin eye surgery. D.It can only be partly accomplished now.
A.New ideas come up as you write. B.Much time is spent on collecting data. C.A lot of effort is made in vain. D.The writer’s point of view often changes