<<陈老师课堂>>三十分钟作业 高三英语 Unit 1
Lesson 3
一. Read the text carefully and answer the following questions:
1. Why were polonium and radium two important discoveries?
What is the disadvantage of radioactive matter mentioned in the text?
What happened to Pierre and Marie after years of working with radio-
active matter?
1906 was a difficult years for Madame Curie, wasn’t it? Wh...
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