45.(　　 ) I was paid last week, but I can’t remember the exact __________ of the money.

　　　　 A. number　　　　 　B. quality　　　　 C. amount　　　 D. percent

44.(　　 ) This book is a __________ for students of science.

　　　　 A. necessary　　　 B. must　　　　　 C. important　　　 D. useful

43.(　　 ) What do you think of the ________________?

　　　　 A. sport car　　　　 B. sports car　　　 C. car’s sport　　 D. cars sports

42.(　　 ) Some famous singers live on the ___________ from their record sales.

　　　　 A. salary　　　　　 B. value　　　　 C. bill　　　　　 D. income

41.(　　 ) The advertisements in newspapers helps cut down the ___________ of making the newspaper.

　　　　 A. price　　　　　 B. pay　　　　　 C. cost　　　　　 D. value

40.(　　 ) Tom has three ______________.

　　　　 A. brothers-in-law　 　　B. brothers-in-laws　　 C. brother-in-law　 D. brother-in-laws

39.(　　 ) Both Marx and Engels were _____________.

　　　　 A. Germans　　　　 B. Germen　　　　　 C. from German　　　 D. Germany

38.(　　 ) My sister had beautiful black long ___________ but I could see some white _______.

　　　　 A. hairs; hair　　　　 B. hair; hairs　　　　 C. hairs; hairs　　　 D. hair; hair

37.(　　 ) We saw a lot of ____________ .

　　　　 A. cow and sheep　　 B. cows and sheeps　 C. cows and sheep　 D. cow and sheeps

36.(　　 ) Jack is a man of ____________.

A.　　 many informations　　　　　　 B. more informations

C. wide information　　　　　　　 D. a large number of information