Some philosophers insist that one way to __ knowledge is through an empirical approach.
A．disseminate
B．classify
C．test
D．acquire
He was greatly vexed by the new and unexpected development.
A．astonished
B．annoyed
C．enlightened
D．contented
What is the man's problem？
A．He is taking too many classes this semester.
B．He is failing one of his required courses.
C．He has a problem with his academic advisor.
D．He took classes with heavy reading assignments.
听力原文：Computers were invented in 1976． 
A．
B．
C．
How is it possible to recognize an object when only part of it is visible？
A．The brain recognizes symmetry and visualizes the whole.
B．The object is often familiar enough to be recognized.
C．The pieces are large even though some are missing.
D．The principles for identification can be learned,
A．Renting a house.
B．Reserving a meeting mom.
C．Having a meeting.
D．Arranging a party.