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

A．不填；a	B．a; the
C．the; a	D．the; 不填

2 . Frank knows so much about _____ earth although he is only ____eight-year-old boy.

A．an; the

B．the; an

C．an; an

3 . _______ sun is shining brightly.

A．A

B．An

C．The

D．/

4 . If we take a boat trip along____Thames(泰晤士河)， we’ll have ___ great time there.

A．/；the

B．/；a

C．the; a

D．the；the

5 . Everyone knows that _____ sun is in the center of the solar system（太阳系）

A．a

B．an

C．the

D．/

6 . (2017·甘肃白银、武威·6)________ moon is very bright at night.

A．A

B．An

C．The

D．/

7 . _______ Changjiang River is one of ______ longest rivers in ______ world.

A．The; the; the

B．The; a; a

C．A; the; a

D．/; the; the

8 . 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

9 . With ________ Internet, the world is like a small village.

A．a

B．an

C．the

10 . Yang Li wants to be ________ astronaut, and she hopes to fly to ________ moon one day.

A．a; an

B．the; an

C．an; the

D．an; an