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十五 必修5 Unit 3 Science and nature
Ⅰ. 阅读理解
A
(2021·兰州模拟)
They may be teenagers, but 17-year-old Brittany Bull and 16-year-old Sesam Mngqengqiswa have grand ambitions—to launch Africa’s first private satellite into space. They are part of a t...
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