2 . When you visit a museum you must ask for _______ permission before taking _______ photographs inside it.

A．/; /	B．a; the
C．a; /	D．the; the

3 . It is 　　　　great honor for a country to host the Olympic Games. A great celebration was held in 　　　　honor of the event.

A．a; a	B．a; /
C．/; /	D．/; the

4 . As we all know, ____________ cloning is the creation of cells or the whole animals using DNA from ____________ single “parent”.

A．the; a	B．a; a
C．/; a	D．/; the

5 . Hunger is _____ number one global health risk, so the WFP has organized a lot of programmes, which helps people most at ________risk.

A．the； /	B．a； /
C．the；the	D．a；a

6 . While he was investigating ways to improve the telescope, Newton made ________ discovery which completely changed _________ man’s understanding of color.

A．the；a	B．a；the
C．a；不填	D．不填；the

7 . Under the Dome, ________ 103-minute documentary released by Chai Jing, has pushed________ public awareness about air pollution and encouraged people to join in efforts to make a difference.

A．the; the	B．a; a
C．the; 不填	D．a; 不填

8 . Attracting senior citizens, Florida is home to the largest population of elder Americans．

A．/; /

B．the; the

C．the; /

D．/ ; a

9 . Sarah looked at      finished painting with      satisfaction.

A．不填；a

B．a; the

C．the;不填

D．the;a

10 . The radio club in our school, which is in _____ charge of Hao Zhe, is much more than just ____ music for everyone.

A．/; /

B．/; the

C．the; /

D．the; the