1 . _________ Earth is bigger than _________ Moon.

A．A, a

B．An, a

C．The, the

D．/, /

2 . The Earth is ________only home for mankind. We must protect________planet as we protect our own eyes.

A．an; the

B．an; a

C．the; a

D．the; the

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

A．a; the

B．an; the

C．a; a

D．an; a

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

A．/; an

B．/; a

C．the; an

D．the; a

5 . I am going to be _____astronaut when I grow up. And I will fly rockets to ______ moon.

A．an;a

B．a;/

C．an; the

6 . ---__________ bad weather it is!
--- We haven't see _________ sun for a week.

A．What a; 不填

B．How a; the

C．What ;不填

D．What; the

7 . ―Tomorrow is Sunday. How do you spend it?
―I want to go on________ trip to ________Great Wall.

A．a; the

B．/; the

C．the; a

D．the; /

8 . Peter, do you know who is the first man to walk on ________ moon?

A．a

B．an

C．the

D．/

9 . Scientists are trying to get more energy from _________ sun.

A．a

B．an

C．the

D．/

10 . —Fishermen are not allowed to fish in ________ Changjiang River.
—Yes, we all want to create ________ more beautiful world.

A．a; a

B．the; the

C．the; a

D．a; the