题目内容
3．-Doctor，I've got a headache．-Don't worry．Just take some medicine，________ you'll be OK again．（ ）
| A． | and | B． | but | C． | so | D． | or |
分析 --医生，我头疼．--别担心，只要吃些药，你会好的．
解答 答案：A but但是，表示转折关系；so所以，表示因果关系；or或者，表示选择关系或者表示"否则，要不然"之意； and和，表示并列关系或者表示顺承关系，用于句子祈使句+and you will…，这里祈使句+and相当于if；根据句子意思可理解为如果只要吃些药，你就会好的．故选：A．
点评 考查并列连词，理解句子的意思，以及前后句之间的关系，根据语境选择合适的并列连词．
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