单项选择题

A．Making new discoveries in the electronics industry.
B．Designing printers.
C．Selling printers.
D．Looking for successful products and find out the reasons.
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单项选择题
A．Make her topic much more general.B．To focus on a narrower topic.C．Change to an entirely new topic.D．Rewrite her research paper.
A．Make her topic much more general.
B．To focus on a narrower topic.
C．Change to an entirely new topic.
D．Rewrite her research paper.
单项选择题
A．Sales Department.B．Research and Development Department.C．The Personnel Department,D．Advertising Department.
A．Sales Department.
B．Research and Development Department.
C．The Personnel Department,
D．Advertising Department.
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