Once friendship is gained, difficulty and agony will be（ ）while joys and happiness will be increased.
A、diminished
B、changed
C、disappeared
D、expanded
【正确答案】：A
【题目解析】：本题考查动词辨析。diminish：减少，(使)减弱，缩减；change：改变，变化；disappear：消失，不见；expand：扩大，增加，增强。句意：一个人一旦获得了友谊，困难与痛苦会成倍地缩小，快乐与幸福会成倍地增加。故A选项符合题意。
