OG4 阅读 Q26

Choice C is the best answer. In lines 35-36("At first... come ture."), the author provides evidence that the transgenic studies done in the 1980s and 1990s were not expected to yield products ready for human use. The author explains that the initial transgenic studies were "merely gee-whiz, scientific geekery, lab-bound thought experiments come true."
Choices A, B, and D are incorrect because they do not provide evidence that the transgenic studies done in the 1980s and 1990s were not expected to yield products ready for human use. Choices A and B do not address the transgenic studies, and choice D focuses on ATryn, a drug that was intended for human use.