Billionaires Bill Gates and Warren Buffett asked American billionaires to at least half of their wealth to charities.
A. take away
B. give away
C. take up
D. give up
网友回答
A. take away
(答案→)B. give away
C. take up
D. give up
解析：短语辨析。A带走；B赠送，泄露。出卖；C占据，从事于，开始做；D放弃；结合句意可知B正确。句意：比尔盖茨和巴菲特要求美国的百万富翁至少要把一般的财产捐给慈善机构。