Argument57

AdelineShenUID: 2630498

The following appeared in a newsletter on nutrition and health. "Although the multimineral Zorba pill was designed as a simple dietary supplement, a study of first-time ulcer patients who took Zorba suggests that Zorba actually helps prevent ulcers. The study showed that only 25 percent of those ulcer patients who took Zorba under a doctor's direction developed new ulcers, compared to a 75 percent recurrence rate among ulcer patients who did not take Zorba（论据）. Clearly, then, Zorba will be highly effective in preventing recurrent ulcers（前提） and if health experts inform the general public of this fact, many first-time ulcers can be prevented as well."（结论）

提纲：
1. study不一定能推出Z可以防止溃疡复发。
    样本容量？样本代表性？（可能病人的本身身体状况不同，且只是对first-time ulcer patients的研究，不一定适合于所有人）75%能否说明其有效？可能diet里的其他营养物质防止了溃疡复发。

2. 即使Z能防止复发率，也不一定能防止first-time ulcers. 而且Z可能有副作用，有些人可能对其过敏(be sensitive to)

疑问：
1. study的研究对象是first-time ulcer patients为什么后面说这个study证明的是recurrent ulcers? first-time ulcer patients怎么理解？

2. 我只找到以上两个段落的论证点，觉得每一段都联系紧密，不好分开，那第三段怎么办？