41.It was ____ that the restaurant discriminated against black customers.
A) addicted
C) assaulted
B) alleged
D) ascribed

42.The medicine ____ his pain but did not cure his illness.
A) activated
C) mediated
B) alleviated
D) deteriorated
 
43.He is the only person who can ____ in this case, because the other witnesses were killed mysteriously.
A) testify
C) accuse
B) charge
D) rectify

44.Professor Hawking is ____ as one of the world's greatest living physicists.
A) dignified
C) acknowledged
B) clarified
D) illustrated

45.The financial problem of this company is further ____ by the rise in interest rates.
A) increased
C) reinforced
B) strengthened
D) aggravated

46.We shall probably never be able to ____ the exact nature of these sub-atomic particles.
A) assert
C) ascertain
B) impart
D) notify

47.All the people in the stadium cheered up when they saw hundreds of colourful balloons
____ slowly into the sky.
A)ascending
C)escalating
B)elevating
D)lingering

48.Marny years had ____ before they returned to their original urban areas.
A) floated
C) skipped
B) elapsed
D) proceeded
 
49.What you say now is not ____ with what you said last week.
A) consistent
C) permanent
B) persistent
D) insistent

50.Military orders are ____ and cannot be disobeyed.
A) defective
C) alternative
B) conservative
D) imperative

51.A 51.Some educators try to put students of similar abilities into the same class because they believe this kind of ____ grouping is advisable.
A) homogeneous
C) spontaneous
B) instantaneous
D) anonymous

52.Even sensible men do ____ things sometimes.
A) abrupt
C) acute
B) absurd
D) apt

53.The commission would find itself ____ at every turn if its members couldn't reach an agreement.
A) collided
C) crumbled
B) savaged
D) hampered

54.Grain production in the world is _____, but still millions go hungry.
A) staggering
C) soaring
B) shrinking
D) suspending
 
55.He developed a ____ attitude after years of frustration in his career.
A) sneaking
C) drastic
B) disgusted
D) cynical