1 . I want to be ________ astronaut, because I can fly rockets to ________ moon.

A．a; the

B．an; the

C．a; a

D．an; a

2 . The Shenzhou-14 manned spaceship returned to ________ earth safely from space in December.

A．a

B．an

C．the

D．/

3 . — Do you often use ________ Internet for shopping?
— Yes, I bought ________ umbrella online just now.

A．/; an

B．/; a

C．the; an

D．the; a

4 . —It’s ________ exciting day, isn’t it?
—Yes, it is. Well, ________ sun is going down. We have to go home.

A．a; a

B．a; the

C．an: the

D．an; a

5 . ________ earth is much bigger than ________ moon.

A．An; a

B．An; the

C．The; the

D．The; a

6 . Scientists have found many galaxies in ________ universe.

A．a

B．an

C．the

D．/

7 . I like playing ________ basketball with my friends when ________ full moon is high in the sky.

A．/; the

B．the; a

C．the; /

D．a; the

8 . We can’t see ________ sun at night.

A．/

B．a

C．the

9 . China has set a goal (目标) of sending astronauts to ________ moon by 2030.

A．a

B．the

C．an

10 . ________ sun rises in ________ east and sets in ________ west.

A．The；/；/

B．/；the；the

C．/；/；/

D．The；the；the