题目内容
20.The Sleep Smart Clock was invented by a group of students at Brown University in Rhode Island _______ a friend complained of waking up tired and performing poorly on a test.( )A. | once | B. | after | C. | unless | D. | while |
分析 在听到朋友抱怨早起醒来很累,测试成绩很差之后,睡眠智能时钟由一群来自罗德岛的布朗大学的学生发明出来了.
解答 答案:B.根据 a friend complained of waking up tired and performing poorly on a test.可知睡眠智能时钟的发明灵感来自朋友的抱怨,应该是先有抱怨,然后才有这个发明,所以答案是B after"在…之后",其他选项的含义分别是A"一旦";C"除非";D"当…时候".
点评 考查从属连词.after的例句:
1.After the pain of defeat passes,England have some thinking to do.失败的痛苦过去以后,英国人应该认真反思一下.
2.Hopefully,you won't have any problems after reading this.
希望你读完这个后就不会有任何问题了.
3.She travelled to India after taking her A levels.
她参加完高等程度考试后去印度旅行了.
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