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It is Friday evening. Tom goes home from school. He isn’t happy. ‘Dinner is ready!’ Mum says. Tom drinks a large bottle of Cola and says ‘I decide to lose weight(减肥). I won’t eat any food from now on.’ Mum laughs ‘If you want to lose weight, you should not drink soft drinks, but should do more exercise. Why do you still drink Cola?’ ‘Cola is one kind of water. People can live without (没有) food , but can’t live without water.’ Tom answers. Can Tom lose weight? Can you guess?
1. What day is it today? __________________________
2. How does Tom feel? ___________________________
3. Why won’t Tom eat any food from now on? _________________________
4. Is Cola a kind of water or a kind of soft drinks? _________________
5. Can Tom lose weight at last? ________________________
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
