1 . We can’t see ________ sun at night.

A．a

B．an

C．the

2 . CNSA announced that China's Chang'e-4 probe landed on the far   side of moon on January 3^rd, 2019. It is historic moment for the Chinese to explore space.

A．a; an

B．an; a

C．the; a

D．the; an

3 . —How often does your brother use _______ Internet?
—He uses it at _______ least three times a week.

A．the; the

B．/ ; the

C．the; /

D．an; /

4 . (2017·甘肃白银、武威·6)________ moon is very bright at night.

A．A

B．An

C．The

D．/

5 . ________ moon is very bright at night.

A．A	B．An
C．The	D．/

6 . _____UN report says Chinese Mobile Payments （支付）is changing _____ world .

A．An; the

B．A; the

C．An; a

D．A; a

7 . As we all know, ________ earth moves around ________ sun.

A．A, a

B．a, the

C．The, a

D．the, the

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

A．a; the

B．a; \

C．an; the

D．an; one

9 . 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

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

A．The; the; the

B．The; a; a

C．A; the; a

D．/; the; the