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单项选择题


A．to buy
B．buying
C．having bought
D．from buying
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单项选择题A．onB．byC．atD．against

A．on
B．by
C．at
D．against

单项选择题The true cause of the anxiety of the workers is that______.

A．they are likely to lose their jobs
B．they are faced with the basic realities of human existence
C．they have no real interests in life
D．they are deprived of their individuality and independence