单项选择题

According to the author, the life of vintners is most controlled by ______.

A．the Bureau of Alcohol, Tobacco and Firearms.
B．unexpected changes in temperature.
C．the sugar content of the grapes.
D．the tempo of the seasons.
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单项选择题
The grapes are harvested on a date that ______.
A．may vary.
B．is traditionally set.
C．depends on the official approval.
D．is determined by availability of pickers.
单项选择题
The phrase cinched up our belts, in the first paragraph, suggests that the couple ______.
A．thought creating a winery would be easy.
B．wore clothing that was too big.
C．strapped their belongings together and moved.
D．prepared for the difficult work ahead.
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