单选题 46.  If businessmen are taxed too much, they will no longer be ______ to work hard, with the result that tax revenues might actually shrink.
【正确答案】 C
【答案解析】 如果对商人征税过高的话,他们就不会再有动力努力工作了。所造成的后果便是税收可能实际上萎缩了。