油脂的精炼包括以下几个步骤：脱胶、（ ）、（ ）、脱臭。
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When can tourists enjoy the lavender best ?
A. In March and April
B. In May and June
C. In July and August
D. In September and October
Provence is the most popular region in France for tourists and holidaymakers, because___.
A. it has a great seaside.
B. it has a great natural environment.
C. it has a great cultrual heritage.
D. It has all of the above.
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