单项选择题

A．If people had more time to learn how to do it.
B．If its cost went down.
C．If it could make buildings more attractive.
D．If people realized its many advantages.
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单项选择题
A．The man will easily find a good job in biochemistry.B．The man should choose another field with more opportunities.C．The man should try to get a job before he graduates.D．The man needs to study harder to be a biochemist.
A．The man will easily find a good job in biochemistry.
B．The man should choose another field with more opportunities.
C．The man should try to get a job before he graduates.
D．The man needs to study harder to be a biochemist.
单项选择题
A．Grade all the homework.B．Clean the professor’’s office.C．Help the professor in the classroom.D．Sort all the documents.
A．Grade all the homework.
B．Clean the professor’’s office.
C．Help the professor in the classroom.
D．Sort all the documents.
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