Astronauts ……………………………….. A. are not allowed to drink water B. have to use recycled waste water

Đáp án đúng: B

Giải thích: Dựa vào câu “Although much is brought up with the astronauts and in cargo deliveries, a lot is recycled from human waste water.

Dịch: phải sử dụng nước thải tái chế