Which kind does Lushan Yunwu belong to?
A. Black tea
B. Green tea
C. White tea
D. Yellow tea
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Which of the scented tea can help us to reduce stress?
A. Marigold
B. Wolfberry tea
C. Jujube tea
D. Ginseng tea
What are the factors that make tea go bad?
Air
B. Water
C. High temperature
D. Strong light
Why is tea popular?
A. It has medical value.
B. It can eliminate grease.
C. It can help us lose weight.
D. It can refresh oneself.
抛三枚硬币, 观察正面朝上和反面朝上的情况。这里样本空间中有()个样本点。
A. 2
B. 4
C. 6
D. 8
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