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A total of 548 students fell ill ______ consuming milk and biscuits in schools in Northwest China's Qinghai province on Wednesday, local authorities said.
A.beforeB.whenC.afterD.while
C

试题分析:当地政府说,中国青海省的西北部,有548名学生在学校吃了饼干,喝了牛奶之后生病。before在……之前when当……时候after在……之后while在…..期间,根据题意,故选C。
点评:词汇是学习语言的重要环节。要掌握好英语,记忆相当数量的词汇是必不可少的。英语中的每一个单词,不仅表达一定的概念,具有一定的词汇意义,而且在语音、拼法、语法等方面都有自己的特点。在学生学习英语的过程中,单词、词组记忆是基础。解答这类题目,关键是理解题干意思以及各选项词组的意思,可以像数学中的代入法一样,依次把各个选项意思放入句子中进行比较,不难选出正确答案。
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