240．Though sucking zinc lozenges has been promoted as a treatment for the common cold, research has revealed no consistent effect. Recently, however, a zinc gel applied nasally has been shown to greatly reduce the duration of colds. Since the gel contains zinc in the same form and concentration as the lozenges, the greater effectiveness of the gel must be due to the fact that cold viruses tend to concentrate in the nose, not the mouse.
In order to evaluate the argument, it would be most helpful to determine which of the following?
A. Whether there are remedies that do not contain zinc but that, when taken orally, can reduce the duration of colds
B. Whether either the zinc gel or the lozenges contain ingredients that have an impact on the activity of the zinc
答案是B文章里说了the gel contains zinc in the same form and concentration as the lozenges为什么B还要问呢？而且A正好回答the fact that cold viruses tend to concentrate in the nose, not the mouse
另一题
1．Executive: The process of submitting bids for architectural contracts should be restructed because when a contractor bids for a contract is acutely aware that other contractors will be submitting bids for the same contract. Therefore, the amount of a bid is not an accurate gauge of how much a contract is actually worth.
Which of the following is an assumption made in drawing the conclusion above?
A. Contractors often charge outrageous amounts for even simple architectural projects.
B. Some architectural contractors base the amount of their bids on factors other than the amount of money necessary to complete the contract.
答案是B 原文结论说the amount of a bid is not an accurate gauge of how much a contract is actually worth意思是说the amount of a bid 不能用来衡量worth
而B说不能用money 衡量amounts 这不是和文章说反拉吗？
另外A错的解释是原文实际意思是contractors undersell 这个bits 到底是怎么回事呢？不是价格最高的获得contract吗？不明白请指教 谢谢 | 
