题目内容
20.It's a good habit to wash your hands ________ you have meals.( )| A. | unless | B. | while | C. | when | D. | before |
分析 吃饭之前洗手是个好习惯.
解答 答案:D;
根据设空处前面的wash your hands可以推测整个句子的意思是"吃饭之前洗手是个好习惯."表示"在…以前"用before;故选D
点评 联系前后语境,在准确把握前后句关系的基础上,先推测出大体句意;再结合关键词利用其固定用法选出正确答案.
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