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John and Mary are twin brother and sister. They are 12 years old now. John liked cola and cakes, and he couldn't get up early, so he was fat. Now he goes to bed early and eats more rice and vegetables every day. Also he likes doing sports and he plays basketball very well and he is very strong.
Mary likes writing, but she couldn't write and she only drew at 7. She liked dolls and often played with it. Now she can draw and can draw cats and dogs well. She also likes dancing and is good at it, but she can't skate. This winter, she wants to learn to skate from her cousin Tina.
| Mary and John are | ||
| Name | Then | Now |
| John | * He got up * He had a | *He goes to bod early. * He has more rice and vegetables. |
| Mary | *She couldn't write and only *She liked playing with dolls. | *She can draw animals very well. *She likes |
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
