1 . ________ earth is much bigger than ________ moon.

A．An; a

B．An; the

C．The; the

D．The; a

2 . ________ Atlantic Ocean is ________ ocean in the world.

A．/, second big

B．the, second biggest

C．the, the second biggest

D．/, the second biggest

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

A．The；/；/

B．/；the；the

C．/；/；/

D．The；the；the

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

A．/; the; /

B．a; /; /

C．a; the; the

D．/; the; the

5 . ________ Earth is ________ beautiful place to live on.

A．The; a

B．The; the

C．A; a

D．A; 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 . —Do you use ________ Internet to study?
—Yes, I use it once ________ week.

A．the; the

B．the; /

C．the; a

D．a; a