单项选择题
A．Training for the Mid-Atlantic Championships. B．Making preparations for a trans-Atlantic trip. C．Collecting information about baseball games. D． Analyzing their rivals’ on-field performance.
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.