L2004/12-1-14

Physician: In order to investigate diseases caused by hormonal imbalances, a certain researcher wants to study, among others, 200 children whose pituitary glands fail to produce typical amounts of Human Growth Hormone(HGH). The study would involve a synthetic version of HGH to the children over a two-year period. But medical research should be permitted only if it is likely to reveal important information about a medical condition and is known to pose only a minimal risk to the subjects. The researcher's proposed study should be prohibited.

Which one of the following, if true, would most help to justify the physician's argumentation?

D. Although hormonal imbalances can cause disease, the imbalances themselves do not constitute a medical condition.

E. The long-term effects of synthetic HGH have never been tested and are unknown.

答案是Ｅ，我选的是Ｄ．题中划线部分可用公式表述为：research permitted----->reveal important info about a medical condition(条件１)+known to pose only a minimal risk to the subjects（条件２）.

D中the imbalances themselves do not constitute a medical condition就否定了条件１．

当然Ｅ也明显地否定了条件２，所以我觉得ＤＥ都有道理．

可是为什么不选Ｄ呢？