It is difficult for us to learn a lesson in life we’ve actually had that lesson. A. until B. after C. since D. when 题目和参考答案——青夏教育精英家教网—

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It is difficult for us to learn a lesson in life_________we’ve actually had that lesson.

A. until B. after C. since D. when

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第二卷 ( 共三部分，满分35 )

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科目：高中英语 来源： 题型：阅读理解

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Scientific research in physics and biology has vastly broadened our views . It has given us a deeper knowledge of the structure of matter and of the universe ; it has brought us a better understanding of the nature of life and of its continuous development . Technology in the application of science has made big advances that have benefited us in nearly every part of life .

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1. Which of the following best shows the stucture of the passage ?

（①=Paragraph1 , ②= Paragraph 2，③= Paragraph 3，④= Paragraph 4，⑤= Paragraph 5）

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