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

A．an; the

B．the; an

C．an; an

2 . 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

3 . 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

4 . Do you want to travel to ______ sun some day?

A．a

B．the

C．an

D．/

5 . —What’s the radio saying, Jack?
—Oh, ______ meteorolite(陨石) attacked _______ earth and it fell down in Russia on February 15, 2013.

A．a; the

B．the; a

C．a; a

D．the; the

6 . My home is near sea and far from       Washington.

A．a; the

B．the; the

C．/;/

D．the;/

7 . When did you finish your homework, at        noon or in        afternoon?

A．the; an

B．/; the

C．a; the

D．the; /

8 . ________18-year-old girl called Anna from________England visited________Great Wall last Friday .

A．An, the, the

B．A ,／, the

C．An,／, the

D．A, an , a

9 . We can see __sun in the day, and we can see ___many stars at night.

A．the, the	B．a, a
C．the, /	D．/, the

10 . ______ earth we live on is bigger than ______ moon.

A．The, the

B．The ,a

C．a ,/

D．a ,the