WhenastronautZhaiZhigangwasamiddleschoolstudent,hewrort...
問題詳情：WhenastronautZhaiZhigangwasamiddleschoolstudent,hewrorte:"Ihaveadream offlyingintospacesoIcangetagoodlookattheEarth."Thisdreamcametruenearly30yearslater,whentheShenzhouVIIspacecraftliftedof...