补充教材：P159（7）
Stronger patent laws are needed to protect inventions from being pirated. With that protection manufacturers would be encouraged to invest in the developement of new products and technologies. Such investment frequently results in an increase in a manufacturer's productivity.
————which of the following conclusions can most properly be drawn from the information above?
各位大虾都应该做过
我选C: Manufacturers will decrease investment in the developement of new products and technologies unless there are stronger patent laws. 我的思路是对第一句话的逆否说法。
答案是E： Stronger patent laws would stimulate improvements in productivity for many manufacturers. 我也同意。
请大家看看C到底错在哪里。我的思路对吗？[em05]作者: hopejie 时间: 2003-11-11 13:57
题中的推理过程是这样的：由 A。stronger patent laws 借助B。encouraged to invest in the developement of new products and technologies这个桥梁，得到C。 an increase in a manufacturer's productivity这个结论。 E选项中即是从A推到C，这是infer题的一种解题思路。所以显然E是正确的。
