27.(2010·芜湖模拟)From the top of the building, you can see at least 　　　distance of 100 kilometers on 　clear day.

A．a; the　 　　B．/;a 　　　　C．the; a 　　　D．a; a

26.(2010·银川模拟)　In China, __________ pressure to pass ________ exams gives students the impression that learning comes from textbooks.

A. /; /　 　 　　　B. the; the　 　 　　C. the; /　　 　 D. /; the

25.(2010·蚌埠模拟)What I am looking for is _____ book that contains _____ ABC of computer.

A. a；不填　　 　　 　B. a; the　　 　　C. the; an　 　　 D. the; 不填

24.(2010·本溪模拟)Because of ______ high demand for Type AB blood, ______ supplies of it are usually limited．

　　　　　　　　　　　 A．the; the　 　　　 B．/; /　　 　　C．/; the　 　 D．a; the

23.(2010·盐城模拟)We have every reason to believe that ______ 2010 World Expo in Shanghai will be ______ success.

A. /; a 　　 　　 B. the; /　　　 　 C. the; a 　　 　　 D. a; a

22.(2010.芜湖模拟)China wants _____ greater say in the decision-making of the International Monetary Fund, and tougher regulations on _____ financial system in wealthy countries to prevent future problems.

A. a; the 　　 B. the; 不填　 　C. the; the　　 　D. a; 不填

21. (2010·南京模拟) In 1948, three American scientists invented ______ transistor, which is ______ small electronic device to control an electric current.

A. the; a　 　　 　　 B. a; a　　 C. the; the　 　　D. a; the

20.(2010·安徽两地联考)Many of　　 friends British people make at school remain　　 friends for life, so it

is　 true that schooldays are “the best of life”.

A．the；不填　　 　B．the; the　 　 　C．不填; the　 　D．不填；不填

19. (2010·济南模拟)He wrote ______ song, which turned out to be rather popular with ______ young.

　　　　　　　　　　　 A. the; the　　　 　　 B. a; 不填　　　　　 　C. a; the　　　　 　D. the; 不

18.(2010·芜湖模拟)-Really? Who will give 　　　　lecture? What is it about?

-Professor Chen, 　　　　　president of Beijing University About pollution.

A．the; a 　　　B．the; /　 　 　C．a; the 　 　　　D．a; a