以下是引用icewarm在2007-6-7 1:57:00的发言:
The weakness of the author's argument is his premise: fish recover normal hormone concentrations, which is different from fish recovering fully. Even if hormone concentrations fall back to normal, the detrimental effect caused by elevated hormone level may still persist.
You freewheel a little bit here. Recover(regain) normal hormone concentration means the fish goes back to normal condition. Dont let D confuse you. Now D says there is some lasting effect because of this hormone fluctuation. So what. The issue is about Doxin causing abnormal hormone concerntration, not lasting effect. This one is actually quite difficult because it prepsents a puzzle that requires careful analysis.
[此贴子已经被作者于2007-6-7 5:09:36编辑过] |