单项选择题
A．held B．took C．set D．planed
A．sightseers have noted the changes B．computer-animated views have shown the shrinkage C．one of the glaciers was hit by a ship D．the temperatures are much colder
A．Colds are always very dangerous. B．Colds are often unpleasant though not dangerous. C．Actually nothing can help get rid of colds. D．The best way to keep colds away is to be healthy.