OG9 阅读 Q43

Choice C is the best answer. The first paragraph of Passage 1 presents a quote by biochemist Kim Lewis of Northeastern University: "Pathogens are acquiring resistance faster than we can introduce new antibiotics, and this is causing a human health crisis." The rest of the passage describes Lewis's research and the experimental antibiotic called teixobactin that her research has produced. According to the second paragraph of the passage, teixobactin has "proved effective at killing off a wide variety of disease-causing bacteria—even those that have developed immunity to other drugs." Therefore, the first paragraph of Passage 1 primarily serves to identify a problem that the research discussed in the passage may help to address.
Choice A is incorrect because although the first paragraph quotes a claim by Lewis regarding antibiotic resistance, this claim isn't developed over the course of Passage 1. Choice B is incorrect because the claim made in the first paragraph regarding antibiotic resistance isn't presented as controversial, nor does Passage 1 attempt to resolve any scientific controversies. Choice D is incorrect because the claim made in Paragraph 1 isn't presented as a theory; moreover, the findings in Passage 1 support this claim rather than challenge it.