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Mary is a student in a primary school, but she can’t go to school today. She has a bad cold. And she has to stay in bed. The doctor tells her to take some medicine and drink more water. She has to take a good rest.
It’s her birthday today. Her classmates come to see her in the afternoon. They bring her a lot of presents(礼物). Lisa brings her a Teddy Bear. Bob brings her some apples. Li Yan brings her some flowers. Mary feels very happy and she says: “I feel much better now!”
1．Mary has a cough.2．Mary goes to school today.
3．Her classmates come to see her in the morning.
4．There are four classmates coming to see Mary.
5．Today is Mary’s birthday.
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
