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单项选择题

A．Dr. Owen"s lecture.
B．How to write a research paper.
C．Farming technology.
D．How to collect information.
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热门试题

单项选择题A．Explosion in technology.B．Explosion in populationC．Explosion in farming.D．Explosion in computer.

A．Explosion in technology.
B．Explosion in population
C．Explosion in farming.
D．Explosion in computer.

单项选择题A．They are colleagues.B．They are classmates.C．They are lovers.D．They are family members.

A．They are colleagues.
B．They are classmates.
C．They are lovers.
D．They are family members.