单项选择题

Though the long-term （） cannot be predicted, the project has been approved by the committee.

A．affect
B．effort
C．effect
D．afford

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单项选择题
When he arrived, he found （） the aged and the sick at home.

A．none but
B．none
C．nothing but
D．no other than
单项选择题
A completely new situation will （） when the examination system come into existence.

A．rise
B．arise
C．raise
D．arouse
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