1 . Which is bigger, ________ sun or ________ earth?

A．a; a

B．a; the

C．the; a

D．the; the

2 . 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

3 . ________ earth is much bigger than ________ moon.

A．An; a

B．An; the

C．The; the

D．The; a

4 . ________ sun rises in ________ east and sets in ________ west.

A．The；/；/

B．/；the；the

C．/；/；/

D．The；the；the

5 . It’s ________ pleasure to see ________ sun rising in ________ east.

A．/; the; /

B．a; /; /

C．a; the; the

D．/; the; the

6 . What can we do to protect ________ Earth?

A．a

B．an

C．the

D．/

7 . ________ moon is smaller than ________ earth.

A．A; a

B．The; a

C．The; the

D．A; the

8 . —Please look at ________ moon in the sky, Lily.
—Wow! It looks like ________ round plate (盘子).

A．a; the

B．the; the

C．the; a

D．a; a

9 . _______ moon goes around ________ earth.

A．The; an

B．A; the

C．An; a

D．The; the

10 . — Look! What’s that moving high up in ________ sky?
— It must be ________ plane.

A．a；the

B．the；/

C．the；a

D．/；a