该优化训练是针对新人教版必修3的Unit4 Astronomy：the science of the Stars出题的，主要考察学生的基础知识，从单词填空、单项选择、完型填空和阅读理解等方面进行考察，难度适中。
ⅠFill in the blank with the words we learned. Then learn the sentences
1 Hawking is one of the most famous ___________(physic) in the world.
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