1 . Chinese volunteers have completed a one-year test living in a simulated（模拟的）space lab in Beijing. The total length of the test, which started on May 10th last year, ____ 370 days, thus setting a new record for the ____ stay in a simulated space lab.

The space lab, called the Yuegong-1, or Lunar Palace 1, measures around 150 square meters. It ____ four sleeping rooms, a bathroom, a waste-treatment room and a room for raising animals. The Yuegong-1 provides everything humans need to survive in an environment ____ to that of a space station in outer space. Oxygen, water and food are ____ within it.

A total of eight ____, all of whom are students at Beihang University, took turns ____ in the space lab. They were divided into ____ groups. On May 10, 2017, two men and two women ____ the Yuegong-1 for an initial （最初的）stay of 60 days. On July 9, they were ____ by another group of four, who stayed 200 days. The second group of students ____ on January 26, 2018, and the initial group ____ and spent 110 days inside it.

___, the volunteers were expected to stay in the Yuegong-1 for 365 days. But the project ended up ____ 370 days —from May 10 last year until May 15. The ____ five days were designed as a way to simulate a（n）____, in which the spaceship might experience a ____ in returning to earth.

The goal of the project “Yuegong 365” is to ____ the limits of humans’ ability to live in a ____ ecosystem for China’s manned moon landing ambition. The success of the project means that China goes one step closer to putting ____ on the moon.