单项选择题

A．The visiting economist has given several lectures.
B．Dr. Johnson and the guest speaker were schoolmates.
C．Dr. Johnson invited the economist to visit their college.
D．The guest lecturer’’s opinion is different from Dr. Johnson’’s.
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单项选择题
It is suggested in the last paragraph that______.
A．the seriousness of animal abuse in the classroom is unknown
B．training teachers in animal care may contribute to reducing animal abuse
C．fewer animals have been used in experiments in recent years
D．many biology teachers are not trained in proper care of animal
单项选择题
A．She can’’t afford a computer right now.B．She can’’t finish her assignment, either.C．The man should buy a computer right away.D．The man can use her computer.
A．She can’’t afford a computer right now.
B．She can’’t finish her assignment, either.
C．The man should buy a computer right away.
D．The man can use her computer.
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