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话题：科普知识 常用词汇： science 科学 scientist 科学家 technology 技术 engineer 工程师 astronaut宇航员 astronomer 天文学家 breakthrough突破 project项目 capsule太空舱 manned spaceship/spacecraft载人飞船 space shuttle航天飞机 unmanned spaceship/spacecraft无人飞船 circling the moon绕月 landing on the moon登月 return to Earth返回地球 weather satellite气象卫星 communication satellite通信卫星 carry out scientific experiments开展科学实验 with all the information available 有所有的可用信息 invent a folding wheel 发明可折叠的轮子 have access to space travel能到太空旅游 apply basic technology to daily life 将基础科技运用到日常生活中 范例： Is there life on Mars? We don't know.Can we land on Mars? It all depends on the development of science and technology.Man has known a little about Mars.There is almost no oxygen on Mars.It might be about 50 degrees above zero at noon and 100 degrees below zero at night, which prevents us from living there.Now that Mars are quite different from our earth, if we are to go to Mars one day, we should have to take along our own oxygen, food and clothing.But it is certain that with the development of science man will land on Mars in time. 一、 单词识记 根据词意写出单词的汉语意思或写英文单词。 | 
