Which of the scented tea can help us to reduce stress?
A. Marigold
B. Wolfberry tea
C. Jujube tea
D. Ginseng tea
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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
10个人中，有3个人的身高高于1.7米。这是一个( )事件。
A. 必然
B. 不可能
C. 随机
D. 基本
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