单项选择题

Conversation II According to david，why do some students havedifficulty accepting the “restaurant system”

A．They are not used to having meals with others．
B．It takes them too long to get their food．
C．They are uncomfortable having meals with adults．
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单项选择题
What was found at the buffalo－kill site
A．Broken buffalo skins and used rifles．
B．Broken stone tools for killing buffaloes．
C．Lots of broken buffalo bones
单项选择题
According to the man，why can’t the geology course be offered during the academic year
A．Because too many students are interested in taking it．
B．Because students’ schedule is already full．
C．Because the professor is too busy．
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