单项选择题

A. Because the oysters may not be fresh.
B. Because the oysters are very expensive.
C. Because the oysters are not so delicious.
D. Because the oysters are not easy to digest.
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单项选择题
A. Planting trees.B. Saving energy.C. Going electronic.D. Conserving Water.
A. Planting trees.
B. Saving energy.
C. Going electronic.
D. Conserving Water.
单项选择题
A. Chasing fads.B. Taking hot tips.C. Buying penny stocks.D. Buying country fund.
A. Chasing fads.
B. Taking "hot" tips.
C. Buying penny stocks.
D. Buying country fund.
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