单项选择题

A. A nutritionist.
B. A professor.
C. A dining hall manager.
D. A doctor.
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单项选择题
A. Editor and author. B. Host and guest. C. Reader and writer. D. Representatives of Students and instructor.
A. Editor and author.
B. Host and guest.
C. Reader and writer.
D. Representatives of Students and instructor.
单项选择题
A. She will help him to do the experiment.B. She has ever met such kind of problems before.C. He shouldn’t do the experiment at all.D. He must be extremely careful.
A. She will help him to do the experiment.
B. She has ever met such kind of problems before.
C. He shouldn’t do the experiment at all.
D. He must be extremely careful.
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