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46、Some women are motivated to work _________professional interests and a desire to contribute to society.
A．because of
B．as to
C．regardless of
D．in spite of

47、One of the most important battles of the American Civil War took _________at Gettysburg, Pennsylvania, in 1863.
A．position
B．part
C．place
D．chance

48、It is obvious that_________,self-awareness is a healthy quality, overdoing it is harmful.
A．since
B．as
C．when
D．while

49、I didn't expect that so many problems would_________during my absence.
A．rise
B．raise
C．arise
D．arouse

50、The food we are going to have is home-cooked with fresh_________.
A．ingredients
B．components
C．elements
D．factors

51、The _________we got indicated that the enemy were planning further attacks.
A．knowledge
B．message
C．intelligence
D．imagination

52、The city failed to look after its schools,_________it spent over $ 1 billion on its museums and stadiums.
A．now that
B．whereas
C．because
D．as long as

53、Tom was very _________to all those who took the trouble to help him out.
A．graceful
B．grateful
C．regretful
D．wonderful

54、The survival of the civilization as we know is_________threat.
A．within
B．under
C．toward
D．upon

55、Daniel is a model student. He works very hard and is _________to his teachers.
A．respective
B．respectful
C．respectable
D．respecting