52
→解答 本冊 130ページ)
(本 )
OFor more than 50 years, the health of American astronauts has
been a concern of * NASA- the National Aeronautics and Space
Administration. ®NASA does not let the risk of cancer for its
astronauts rise more than three percent during their lifetime.
®But there is more to be worried about than a possible increased
risk of cancer. s
* NASA(National Aeronautics and Space Administration) 「アメリカ航空宇宙局」
(東京経済大学)