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Hello! I'm Betty. Let's talk about how to keep healthy! I have some good ideas for you. First, you should do exercise every day. Second, you should eat fresh fruit and vegetables. Third, you should drink milk. Remember, many drinks are not good for us. And you should not eat too much fast food or ice cream.
( ) 1. Lucy gives us some good ideas to keep health
( ) 2. We should do excise every day.
( ) 3. We should drink more juice.
( ) 4. Many drinks are bad for us.
( ) 5. Fast food and ice cream are healthy.
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
