单项选择题

A．Two years.
B．Three years.
C．Four years.
D．Five years.
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单项选择题
A．An angel’s bless.B．The nurses’ intensive care.C．The speaker’s voice and touch.D．His vital energies.
A．An angel’s bless.
B．The nurses’ intensive care.
C．The speaker’s voice and touch.
D．His vital energies.
单项选择题
A．More and more cities appear.B．There are increasing complaints about environmental problems.C．More and more people pour into cities.D．One-third of industrial sewage in the cities went untreated.
A．More and more cities appear.
B．There are increasing complaints about environmental problems.
C．More and more people pour into cities.
D．One-third of industrial sewage in the cities went untreated.
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