1 . —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

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

A．a

B．an

C．the

D．/

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

A．a

B．an

C．the

D．/

4 . Many more people have realized saving_____________ earth begins with small things.

A．a

B．an

C．the

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

A．a

B．/

C．the

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

A．a

B．an

C．the

D．/

7 . 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

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

A．an; the

B．an; /

C．a; the

D．a; a

9 . — What do you think of ________ virus COVID-19?
— It is very terrible. I’ve never met   ________ much more serious disease.

A．the;a

B．a;a

C．a;the

D．the; the

10 . Chinese learning is popular with people all over ______ world．

A．a

B．/

C．the