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

A．/; an

B．/; a

C．the; an

D．the; a

2 . —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

3 . According to Daily Mail, China has set up a goal of sending astronaut to ________ moon by 2030.

A．a

B．an

C．the

D．/

4 . —Will it rain this afternoon?
—I don’t think so. Look at _________ sun.

A．a

B．an

C．the

D．/

5 . The Grand Canyon is ________ great wonder of ________ natural world.

A．an; the

B．the; a

C．the; 不填

D．a; the

6 . — Look! What’s that moving high up in ________ sky?
— It must be ________ plane.

A．a；the

B．the；/

C．the；a

D．/；a

7 . —Bill, do you have a dream?
—Yes. I wish to go to _________ moon one day.

A．a

B．an

C．the

D．/

8 . _____ sun is shining.

A．The

B．A

C．An

9 . Look! There are so many stars in ________sky.

A．a

B．an

C．the

D．/

10 . There are over 58,000 rocky objects in_____ space，about 900 of which could fall down onto ______ earth．

A．the；the

B．不填；the

C．the；不填

D．a；the