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题目内容
（西安科技大学-大学英语2）
2
【单选题】
Professor Smith and Professor Brown will ________ in presenting the series of
lectures on American literature.
A、
alter
B、
alternate
C、
substitute
D、
exchange
【单选题】
Professor Smith and Professor Brown will ________ in presenting the series of
lectures on American literature.
A、
alter
B、
alternate
C、
substitute
D、
exchange
参考答案