5．Who is the first Chinese to walk In space?

A．Wang Yaping.

B．Zhao Lijian.

C．Yang Liwei.

D．Zhai Zhigang.

6．What did the astronauts mainly do during the 90-day visit to the station?

A．Developed technologies for the construction of Tiangong.

B．Started the missions for the other two parts of Tiangong.

C．Walked out of Tianhe to supply with the international astronauts.

D．Evaluated the system that helps maintain life in Tianhe.

7．What is the main idea of the last paragraph?

A．The successful launch for the Shenzhou-13 spacecraft.

B．The commitment of international cooperation and exchanges.

C．China's expectation and outlook for exploration of the universe.

D．The great importance of space exploration for China and the world.

8．Which of the following words can best describe the crew?

A．Enthusiastic and ambitious.

B．Strong-willed and intelligent.

C．Cautious and generous.

D．Creative and interactive.