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        1. 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.a(chǎn)fterD.while
          C

          試題分析:當?shù)卣f,中國青海省的西北部,有548名學生在學校吃了餅干,喝了牛奶之后生病。before在……之前when當……時候after在……之后while在…..期間,根據(jù)題意,故選C。
          點評:詞匯是學習語言的重要環(huán)節(jié)。要掌握好英語,記憶相當數(shù)量的詞匯是必不可少的。英語中的每一個單詞,不僅表達一定的概念,具有一定的詞匯意義,而且在語音、拼法、語法等方面都有自己的特點。在學生學習英語的過程中,單詞、詞組記憶是基礎。解答這類題目,關鍵是理解題干意思以及各選項詞組的意思,可以像數(shù)學中的代入法一樣,依次把各個選項意思放入句子中進行比較,不難選出正確答案。
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