577.____ the differences in colors,languages and races,we share the charm and joy of the Olympic Games,and together we seek for the ideal of mankind for peace.
A.Though
B.Because of
C.In spite of
D.In addition to
578.The new tax policy only affects people on yearly incomes over 120,000 _____ the very rich.
A.by the way
B.as a result
C.in other words
D.as a matter of
577.答案是C;根据句意，此句前后应是转折关系，而though只可接完整的句子。
578.答案是C;by the way顺便问一下；as a result 结果；in other words 换句话说。
