公共英语考试

【单选题】 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

网考网参考答案：B
网考网解析：
[解析] 此题可用排除法。A文中没有评论，C和D都与文中的内容相反，因此可确认B为正确答案。 查看试题解析出处>>