Unit 1 Great ScientistsUnit 1 Great ScientistsDo you know the great scientists?Do you know the great scientists?1.Who invented the first modern steam engine?1.Who invented the first modern steam engine?James Watt ( 瓦特 )2.Who discovered radium?2.Who discovered radium?Madame Curie 3. Who is the in...

时间:2024-11-20 19:58栏目:中学教育