单项选择题


Questions 22 to 25 are bused on the conversation you have just heard.

A．Correcting students’ exercises.
B．Researching in the laboratory.
C．Assisting teaching.
D．Grading homework sets.
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单项选择题
A．Because they needed more people to work on the farm.B．Because they thought slavers’ life so miserable.C．Because they wanted to the slavers lead a free life.D．Because their pillar economy asked for more labor forces.
A．Because they needed more people to work on the farm.
B．Because they thought slavers’ life so miserable.
C．Because they wanted to the slavers lead a free life.
D．Because their pillar economy asked for more labor forces.
单项选择题
A．The bike is too old.B．The tires are not so good.C．The tires are broken.D．The bike is worthwhile.
A．The bike is too old.
B．The tires are not so good.
C．The tires are broken.
D．The bike is worthwhile.
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