单项选择题


What does the man do

A． He is a worker.
B． He is a doctor.
C． He is a teacher.
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单项选择题
Why must the workers wear thick glasses
A． To see clearly.
B． To protect them from dust.
C． To protect them from bad light.
单项选择题
Has the man ever been to the farm
A． No, never.
B． No, but he will.
C． Yes, he has.
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