2. 外语
  3. Elizabeth Hazen and Rachel Brown copatented one of the most widely acclaimed wonder drugs of the post-Second World War years. Ha

Elizabeth Hazen and Rachel Brown copatented one of the most widely acclaimed wonder drugs of the post-Second World War years. Ha

admin2011-01-06  45
问题     Elizabeth Hazen and Rachel Brown copatented one of the most widely acclaimed wonder drugs of the post-Second World War years. Hazen and Brown’s work was stimulated by the wartime need to find a cure for the fungus(真菌类) infections that afflicted many military personnel. Scientists had been feverishly searching for an antibiotic toxic enough to kill the fungi but safe enough for human use, since, unfortunately, the new "wonder drugs" such as penicillin and streptomycin(链霉素) killed the very bacteria in the body that controlled the fungi. It was to discover a fungicide without that double effect that Brown, of New York State’s Department of Health Laboratories at Albany, and Hazen, senior microbiologist at the Department of Health in New York, began their long-distance collaboration. Based upon Hazen’s previous research at Columbia University, where she had built an impressive collection of fungus cultures, both were convinced that an antifungal organism already existed in certain soils.
    They divided the work. Hazen methodically screened and cultured scores of soil samples, which she then sent to her partner, who prepared extracts, isolated and purified active agents, and shipped them back to New York, where Hazen could study their biological properties. On a 1948 vacation, Hazen accidentally collected a clump of soil from the edge of W.B. Nourse’s cow pasture in Fauquier County, Virginia, that, when tested, revealed the presence of the microorganisms. In farm owner Nourse’s honor, Hazen named it Streptomyces noursci , and within a year the two scientists knew that the properties of their substance distinguished it from previously described antibiotics. After further research they eventually reduced their substance to a fine, yellow powder, which they first named "fungiciden", then renamed "nystatin"(to honor the New York State laboratory) when they learned the previous name was already in use. Of their major discovery, Brown said lightly that it simply illustrated "how unpredictable consequences can come from rather modest beginnings."
The word "both" in line 11 refers to ______.
选项 A、Hazen and Brown
B、penicillin and streptomycin
C、the Department of Health laboratories at Albany and New York
D、double effects
答案A
解析 根据上文Hazen和Brown开始合作，鉴于Hazen以前的研究经验，和下文were convinced that(确信……)这层含义，both应该指的是Hazen和Brown。
转载请注明原文地址:https://jikaoti.com/ti/wZgsFFFM
本试题收录于： 职称英语卫生类B级题库职称英语分类
0

职称英语卫生类B级

职称英语

相关试题推荐
随机试题
最新回复(0)