1 . Amy is _______ unusual girl. She has traveled to 15 countries in _______ world.

A．a; the

B．a; \

C．an; the

D．an; one

2 . Neil Armstrong is the first man________.

A．walk on the moon

B．walk on moon

C．to walk on the moon

D．to walk on moon

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

A．The; the; the

B．The; a; a

C．A; the; a

D．/; the; the

4 . 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

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

A．a

B．an

C．the

D．/

6 . There is no living thing on __________moon.

A．the

B．a

C．不填

7 . --- Look at ______ moon high up in the sky .
--- Oh, what ______ bright moon ! Let’s go out to enjoy the night, shall we?

A．a; the

B．the; a

C．不填; a

D．不填; the

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

A．an; the

B．the; an

C．an; an

9 . My little brother Bob hopes to travel to ____ space in the future.

A．a

B．/

C．the

10 . 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