Under Qian'sleadership, China developed the Dongfeng missiles, followed by the first generation of Long March rockets. In 1970, China successfully launched its first man-made satellite, Dong Fang Hong I, from a Long March rocke...
英语 语言 听力 外语分类 切换-音频 00:00:00/ 00:00:00 高清 音频列表 1 高中英语选择性必修一单词朗读 Unit 5 1474 2022-12 2 高中英语选择性必修二单词朗读 Unit 1 2175 2022-12 3 高中英语选择性必修二单词朗读 Unit 2 1718 2022-12 4
Unit1Science and Scientists 词汇表