第1--4题选项
A The Motivation of Flaxseed Study
B The Study on Ginseng Displays Its Good Promise
C The Doctors Responsibility Led Them to Carry Out These Two Studies
D Ginseng Is As Good to Cancer Patients As Flax seed
E The Methods and Results of the Study on Flax- seed
F A different opinion on the use of flaxseed
第5--8题
5. Doctors in the US wanted to know______.
6. Both studies on flaxseed and ginseng show______.
7. It is the unique nutrient profile of flaxseed______.
8. In the ginseng trial the researchers tested the potency of ginseng______.
第5--8题选项
A that led the researchers in Dukes School of Nursing to study it
B by giving different doses of the herb to patients with different cancers
C whether the foods and supplements patients took every day were good or not
D though both flaxseed and ginseng are all healthy alternative medicines
E that either of them is beneficial to cancer patients
F because we still have to see if flaxseed can prvent prosate caancer
答案与题解：
1．C 本段第一句及最后一句说得很清楚，医生必须了解病人所吃的东西究竟有益还是有害。
2．E 本段第一、二句是研究方法，而第三、四句则是研究结果。
3．F 此段说到，有一位医生不愿意将亚麻籽作为药物开在处方里，因为她认为目前还需要继续研究，看看它是否能预防前列腺癌，尽管他也承认亚麻籽是健康食品。
4．B 本段第二句说到，服用1000毫克剂量的病人中，25%的人的疲劳症状有中度改善，而服用2000毫克的病人中，27%的人的疲劳症状大大改善，可见人参有很好的前景。
5．C 本题答案来源于第二段第一句及最后一句。
6．E 本题答案根据是第四段最后一句及第六段第二句。
7．A 本题答案在第三段最后一句。
8．B 本题答案来源于第六段第一句。