9.Human facial expressions differ from those of animals in the degree to which they can be deliberately controlled and modified.

　　A) sufficiently

　　B) noticeably

　　C) intentionally

　　D) absolutely

　　10.The Constitutions vague nature has given it the flexibility to be adapted when circumstances change.

　　A) imprecise

　　B) concise

　　C) unpolished

　　D) elementary

　　11.The expedition reached the summit at 10:30 that morning.

　　A) top of the mountain

　　B) bottom of that morning

　　C) starting point

　　D) site

　　12.The latest census is encouraging.

　　A) count

　　B) statement

　　C) agreement

　　D) estimate

　　13.Academic records from other institutions often become part of a universitys official file and can neither be returned to a student nor duplicated.

　　A) borrowed

　　B) purchased

　　C) copied

　　D) rewritten

　　14.While serving in the Senate in the early 1970s Barbara Jordan supported legislation to ban discrimination and to deal with environment problems.

　　A) list

　　B) forbid

　　C) handle

　　D) investigate

　　15.Gambling is lawful in Nevada.

　　A) legal

　　B) irresistible

　　C) enjoyable

　　D) profitable