问题
选择题
On the annual International Volunteers Day, the world ______ the work of millions of people who give their time to help others．
A．abolishes
B．assesses
C．accompanies
D．acknowledges
答案
答案：D
题目分析：考查动词。A废除；B评估；C陪伴；D承认。句意：在每年的国际志愿者日，世界感谢成千上万的人们给予他们的时间来帮助他人的工作。故D正确。