第29题: [单项选择]It can be inferred from the passage that ______. A. the Apollo mission was very successful B. protection from space radiation is no easy job C. astronauts will have deformed children or grandchildren D. radiation is not a threat to well-protected space explorers 参考答案:B 答案解析:[解析] 本题要求根据文章的内容判断四个选项的推断是否正确。选项A阿波罗计划的成功，选项C宇航员是否一定会有畸形的子孙，在文章中没有提及。文章中说辐射对人体的危害难以确定，而且短期内难以察觉等等，说明
