第一节 多项选择(共10小题；每小题1分，满分10分)
21. Studies show that the things that contribute most to a sense of happiness cannot be bought, such as a good family life, friendship and work _______ .
A. bonus B. talent
C. affection D. satisfaction
22. Since World War Ⅱ, the authority to ______ war has gradually slipped into the hands of the US president.
A. announce B. declare
C. conduct D. behave
