单项选择题


Questions 9 and 10 are based on the following news.
How many students were killed in the gunshot

A．At least 8.
B．More than 30.
C．At least 120.
D．Not mentioned.
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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.
单项选择题
The price drop of crude oil is beneficial in that it
A．helps to revitalize the world economy.
B．promotes oil export to other nations.
C．helps to push up the regional economy.
D．provides an opportunity to the oil exporters.
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