词汇选择题
11. Lower taxes would spur investment and help economic growth.
A. attract
B. encourage
C. require
D. spend
12. He was kept in appalling conditions in prison.
A. critical
B. temble
C. necessary
D. normal
13. I cant put up with my neighbors noise any longer， its driving me mad.
A. measure
B. generate
C. tolerate
D. reduce
14. The project required ten years of diligent research.
A. hardworking
B. scientific
C. basic
D. social
15. He was rather vague about the reasons why he never finished school.
A. unclear
B. bright
C. bad
D. general