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(1) |
细节理解题.根据第一段“Now, researchers in California have designed what could be a harmless trigger to date:shining near-infrared light on the drug in the capsule.”可知,应选B项. |
(2) |
推理判断题.根据第三段中“…ONB groups fall off the polymer, leading to its breakdown”和“…and it could be poisonous to cells…”可知,应选D项. |
(3) |
试题解析:细节理解题.根据最后一段中“When the Bhcs absorb NIR light, the reactive groups are exposed…”可知此处用exposed,即C项正确. 长难句解析: 1.Researchers around the globe have developed polymers(聚合物)and other materials that begin to break down when they absorb cither ultraviolet(UV,紫外线)or visible light. 本句是polymers(聚合物)and other materials的定语从句,when 引导的时间状语从句. 2.This one consists of a long chain of compounds called cresol groups linked in a polymer.Cresol contains reactive(易反应的)components that make it highly unstable in its polymeric form, a feature 本句是called动词过去分词做后置定语,修饰a long chain of compounds.后面是reactive(易反应的)components的定语从句 考点:日常生活类-说明文 文章大意:本文围绕“怎样使用胶囊,让我们生病吃药更加安全、而且疗效好”这个主题展开研究,来展开话题的. |
科目:高中英语 来源:2010年普通高等学校招生全国统一考试、英语(湖南卷) 题型:050
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