Q20:

Five years ago, as part of a plan to encourage citizens of Levaska to increase the amount of money they put into savings, Levaska’s government introduced special savings accounts in which up to $3,000 a year can be saved with no tax due on the interest unless money is withdrawn before the account holder reaches the age of sixty-five.  Millions of dollars have accumulated in the special accounts, so the government’s plan is obviously working.

Which of the following, if true, most seriously weakens the argument?

1. A substantial number of Levaskans have withdrawn at least some of the money they had invested in the special accounts.
2. Workers in Levaska who already save money in long-term tax-free accounts that are offered through their workplace cannot take advantage of the special savings accounts introduced by the government.
3. The rate at which interest earned on money deposited in regular savings accounts is taxed depends on the income bracket of the account holder.
4. Many Levaskans who already had long-term savings have steadily been transferring those savings into the special accounts.
5. Many of the economists who now claim that the government’s plan has been successful criticized it when it was introduced.

Ａ只是说有人ｗｉｔｈｄｒａｗ，这个情况肯定会存在的，但是政府的目的是increase the amount of money they put into savings，只要有了increase,就是working了，所以Ａ不能说是ｗｅａｋｅｎ

看Ｄ，说明了一个情况，人们只是把原来存在银行的钱转移了一下，看起来是special accounts的钱多了，但是如果只是从其他的ｓａｖｉｎｇ　ａｃｃｏｕｎｔ转过来的，the amount of money they put into savings的总量可能就没变，所以ｗｅａｋｅｎ了