1 . More and more people have realized saving ________ earth begins with small daily things.

A．a

B．an

C．the

D．/

2 . —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

3 . Peter, who is the first man to walk on 　　　　 moon?

A．a

B．an

C．the

D．/

4 . —Do you use ________ Internet to study?
—Yes, I use it once ________ week.

A．the; the

B．the; /

C．the; a

D．a; a

5 . _________ Earth is bigger than _________ Moon.

A．A, a

B．An, a

C．The, the

D．/, /

6 . — Do you know anything about _______ Earth?
— Yes. It provides water and foods _______ us.

A．a; for

B．an; with

C．the; for

D．/; with

7 . Rivers low, mountains high, the same moon in _________sky.

A．a

B．/

C．the

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

A．a

B．an

C．the

D．/

9 . 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

10 . Daming is eating ________ ice cream in ________ sun.

A．an; the

B．an; /

C．a; the

D．a; a