A：两国的分裂都是雅尔塔会议的产物
B：两国的分裂都与世界大国的强权政治有关
C：分裂后的政权都分别参加华约、北约两大军事政治集团
D：两国现都正在实现国家的重新统一
先化简，再求值：
Can you help me ________ my homework?
_________ he was very tired, he continued working in his office.
