2. 职称英语
  3. Migraine, the most debilitating common form of headache, afflicts perhaps 18 mil

Migraine, the most debilitating common form of headache, afflicts perhaps 18 mil

游客2025-02-25  8
问题 Migraine, the most debilitating common form of headache, afflicts perhaps 18 million Americans, who collectively lose 64 million workdays a year, and they cost the nation $50 billion in medical expenses and lost work time.
选项 A、a year, and they cost the nation $50 billion in medical expenses and lost
B、a year and thus cost the nation $50 billion in medical expenses and lost
C、a year, so as to cost the nation $50 billion in medical expenses and lost
D、a year that costs the nation $50 billion in lost medical expenses and
E、a year, which thus cost the nation $50 billion in lost medical expenses and
答案 B
解析 由题意知，cost和lose是定语从句中的并列谓语动词；A中they的出现不仅多余，且改变了句子的结构，句意随之改变。C中so as to的目的状语与主句之间用逗号隔开是不允许的，且so as to表目的，与句意不符。D中有两个缺陷：(1)cost的原动作执行者本是Americans，现在却变成了a year，改变了句意(逻辑搭配也不当)；(2)lost本用于修饰worktime却改为修饰medical expense，也改变了句意。E中同样有两个缺陷，(1)cost的动作执行者变成了64 million workdays；(2)同D(2)。B正确，大意是：从整体上讲，这些美国人一年要损失掉64 million个工作日，若以医疗费用和损失工作时间计价，他们花去了这个国家500亿美元。
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