单项选择题


In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. Mark the correct answer to each question on your answer sheet.

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单项选择题
How many students were killed in the gunshot
A．At least 8.
B．More than 30.
C．At least 120.
D．Not mentioned.
单项选择题
Before set up his pizza delivery service, he
A．tested samples on potential clients.
B．handed out product questionnaires.
C．assessed demand in different areas.
D．trained staff for a few months.
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