24. Since he has no sense of ______ humor, I’m sure he didn’t catch ______ humor in your remarks.
A. 不填; the B. a; the C. a; 不填 D. the; a
25. The city assigned a policeman to the school crossing because ______ traffic there was so heavy.
A. a B. an C the D. one
26. It is known to all that ___ light travels faster than ___ sound.
A. /; / B. a; a C. the; the D. the; /
27. 【2010福建】 It’s good feeling for people to admire the Shanghai world expo that gives them ______ pleasure
A.不填,a B. a,不填 C. the ,a D. a, the