单项选择题

Questions 26 to 28 are based on the passage you have just heard.

A．The progress of toys follow a direct line of rising.
B．Toys also appeal greatly to adults.
C．Toys are not characterized by technological progress.
D．Toys reflect the pace of social progress.
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单项选择题
A．Because they want to travel to broaden their horizon.B．Because they want to explore what they are interested in.C．Because they need to go back to serve military duty.D．Because they need to recover after twelve years of required education.
A．Because they want to travel to broaden their horizon.
B．Because they want to explore what they are interested in.
C．Because they need to go back to serve military duty.
D．Because they need to recover after twelve years of required education.
单项选择题
A．Employ them as lab assistants.B．Teach classes at their high school.C．Help them with their studies.D．Pay them for participating in the study.
A．Employ them as lab assistants.
B．Teach classes at their high school.
C．Help them with their studies.
D．Pay them for participating in the study.
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