61、It was in the United States that I made________ the of Professor Jones.
A．acknowledgement
B．acquaintance
C．recognition
D．association
62、Could you take a ________sheet of paper and write your name at the top?
A．bare
B．vacant
C．hollow
D．blank
63、A culture in which the citizens share similar religious beliefs and values is more likely to have laws that represent the wishes of its people than is a culture where citizens come from ________backgrounds.
A．extensive
B．influential
C．diverse
D．identical
64、Areas where students have particular difficulty________ have been treated particular care.
A．by
B．in
C．under
D．with
65、He gave a ________to handle the affairs in a friendly manner.
A．pledge
B．mission
C．plunge
D．motion
66、Don’t let the child play with scissors________ he cuts himself.
A．in case
B．so that
C．now that
D．only if
67、________ the danger from enemy action, people had to cope with a severe shortage of food, clothing, fuel, and almost everything.
A．As far as
B．As long as
C．As well as
D．As soon as
68、Many people lost their jobs during the business ________.
A．desperation
B．decrease
C．despair
D．depression
69、Whenever a big company ________a small one, the product almost always gets worse.
A．gets on with
B．cuts down
C．takes over
D．puts up with
70、Mr. Smith was the only witness who said that the fire was ________.
A．mature
B．deliberate
C．meaningful
D．innocent