单项选择题

A．International travel and commerce.
B．Lack of efficient public health system.
C．Technology in food processing industry.
D．Unhealthy eating habits of people.
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单项选择题
Bailey has secured a grant to encourage the Tufts’’ chefs to increase the amount of local produce on Tufts’’ campuses.
A．Y
B．N
C．NG
单项选择题
How much does the author expect from the customer if he does extra work for him
A．$3.00.
B．15%.
C．20%.
D．as much as possible.
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