PREP中的题！！谢谢！！[1]

When people evade income taxes by not declaring taxable income, a vicious cycle result. Tax evasion forces lawmakers to raise income tax rates, which causes the tax burden on nonevading taxpayers to become heavier. This, in turn, encourage even more taxpayers to evade income taxes by hiding taxable income.

The evasion cycle described above could not result unless which of the following were true?

正解:

 When lawmakers establish income tax rates in order to generate a certain level of revenue, they do not allow adequately for revenue that will be lost through evasion.

答案的后半句意思是什么啊??谢谢!!

答案的意思是，制定税率的人并没有考虑到逃税中损失的收入。

这下你理解了为什么选那个了吧。

就是因为那些制定税率的人太笨了，考虑不周全，才使得产生vicious cycle,

哎呀!我真是比制订税率的人还笨!!!!

真是谢谢lucky MM!!一直这么耐心的帮助我!!