1 . We took ________ tour by coach to ________ Summer Palace.

A．a; the

B．a; /

C．an; the

D．an; /

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

A．/

B．a

C．the

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

A．a

B．the

C．an

4 . ________ moon is very bright at night.

A．A

B．An

C．The

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

A．a

B．an

C．the

D．/

6 . It was ________ cold winter night and the moon was shining brightly across ________ night sky.

A．a; the

B．a; a

C．the; a

D．a; /

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

A．an; the

B．the; a

C．the; 不填

D．a; the

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

A．a

B．an

C．the

D．/

9 . —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

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

A．a

B．an

C．the

D．/